My "Heal" Set.

[Vector Nightmare]

Yeah, I know some people have done this before, but this is my take on a strategy that focuses on increasing one's Life Points.

[spoiler=Playbook]The win condition of this set is Complete Final Light, which grants an automatic victory. Reaching 40000 Life Points may seem a daunting task, but it is possible with the following support.

Cure Warrior and Lady Kuriboh are a useful engine for stalling, gaining Life Points, and setting up the field during the next turn. They are not critical, but some flavor support.

Heal Synchron, Dian Keto's Apprentice, and Dian Keto's Servant make a combination that can easily allow you to bring out Synchro monsters (more specifically the Embodiment of Life monsters). When you have at least 2800 more Life Points than your opponent, Normal Summon Apprentice, Special Summon Heal Synchron, and then Special Summon Servant. You can facilitate a Level 5, 7 or 10 Synchro with those cards alone.

Holy Sprite and Maiden of White Light can also be used in conjunction with the above cards. Holy Sprite allows you to maintain hand advantage, while Maiden is easy to summon and use for high-level Synchro Summons later.

Healing Rain is a decent card that keeps on increasing your Life Points. It also increases your opponent's Life Points so it doesn't synergize well with cards that require a certain difference to exist between you and your enemy, but it helps building up to the 40000 goal, and is indestructible if you are ahead in LP. Life Aegis can help protect your valuable monsters from all forms of destruction, but it costs you LP, so you have to weigh out the benefits of maintaining field advantage or quickly building up LP, depending on the situation.

The Embodiments of Life are 3 Synchro monsters which can be Summoned relatively easily in this deck. Cynthia will keep increasing your Life Points whenever a heal effect is activated, and has a swarm effect that only activates during the End Phase, allowing you to bring out more monsters. She synergizes with Life Aegis, as you can protect your monsters and use them next turn. Depending on how far ahead you are in Life Points, Katherine can be a massive powerhouse, and her other effect can help you reach your goal faster. Finally Alcya, if you decide to bring her out, will facilitate a certain amount of protection from card effects, and she is also ideal if combined with the effect of Heal Synchron, as she has a lot of attack power with which to beat down monsters. Finally, Spring of Life requires you to Tribute 2 of these monsters, but will instantly double your Life Points - as it is difficult to keep generating Life Points above a certain limit, it should be attempted to reach 20000 Life Points fast with card effects, then use this card to go for the win.

Chaos Priestess is a semi-boss monster that does not currently have the greatest synergy with the set. She can return Heal Synchron and / or Cure Warrior to the Graveyard to reuse their Special Summon effect, and can act as a useful LP gain engine.

Such a deck's main draw engine would be Ancient Leaf - falling 2000 LP behind is a fair price for a valuable +1, though other cards with hefty LP costs should be avoided. Upstart Goblin also benefits you if you have Cynthia out, and Pot of Duality is good if you already have your Synchros out, or do not plan to immediately summon them. Stall cards are recommended, in particular Battle Fader to use with Chaos Priestess. Honest is obviously good in this. Cards like Poison of the Old Man and Dian Keto are not recommended because they only increase LP at the cost of hand advantage - the point is to maintain a certain field presence and advantage, while building up to your goal as quickly as possible, so -1ing yourself for a quick boost of 1000 - 1200 LP is not a good option.[/spoiler]

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[b]Complete Final Light[/b]
SPELL / Normal
Activate only if your Life Points are 40000 or more. This card's activation and effect cannot be negated. You win the duel.

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[b]Lady Kuriboh[/b]
LIGHT / Fairy
Level 1
300/200
Activate only by discarding this card and 1 other card from your hand when an opponent's monster declares an attack. Negate the attack and gain Life Points equal to the attacking monster's ATK and DEF points.

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[b]Cure Warrior[/b]
LIGHT / Warrior
Level 3
800/1700
When this card is discarded from your hand to the Graveyard, gain 1000 Life Points. If your Life Points are 10000 or more, you can remove from play 1 Level 2 or lower LIGHT monster from your Graveyard to Special Summon this card from your Graveyard. If this card is Special Summoned by its own effect, remove it from play when it is removed from the field.

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[b]Heal Synchron[/b]
LIGHT / Warrior / Tuner
Level 2
1100/300
You can Special Summon this card from your hand or Graveyard when your Life Points are increased by a card effect. If this card is Special Summoned by its own effect, remove it from play when it is removed from the field. If this card is used as a Synchro Material Monster, whenever the Synchro Summoned monster destroys another monster by battle, gain Life Points equal to half the destroyed monster's ATK points.

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[b]Dian Keto's Servant[/b]
LIGHT / Spellcaster
Level 5
1000/2500
You can Special Summon this card from your hand if your Life Points are higher than your opponent's by 4000 points or more.

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[b]Dian Keto's Apprentice[/b]
LIGHT / Spellcaster
Level 3
700/1300
When this card is Normal Summoned, gain 1200 Life Points.

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[b]Holy Sprite[/b]
LIGHT / Fairy / Tuner
Level 2
0/1500
When this card is used as a Synchro Material Monster, gain 1000 Life Points. You can remove this card in your Graveyard from play to add 1 Level 1 "Holy Sprite" from your Deck to your hand.

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[b]Maiden of White Light[/b]
LIGHT / Fairy
Level 6
2200/2800
You can Special Summon this card from your hand if your Life Points are 12000 or more.

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[b]Healing Rain[/b]
SPELL / Continuous
During each Standby Phase, increase both player's Life Points by 1200. This card cannot be removed from the field if your Life Points are higher than your opponent's by 3000 points or more.

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[b]Life Aegis[/b]
TRAP / Continuous
While your Life Points are more than double your opponent's Life Points, if a monster you control would be destroyed, take 1200 damage instead.

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[b]Embodiment of Life Cynthia[/b]
LIGHT / Fairy / Synchro
Level 5
2000/2800
1 Tuner monster + 1 or more non-Tuner monsters
When a player's Life Points are increased by a card effect, except the effect of "Embodiment of Life Cynthia", gain 800 Life Points. During your End Phase, you can Special Summon 1 Level 4 or lower monster from your Graveyard in Defense Position whose ATK points are equal to or lower than the Life Points you gained during this turn.

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[b]Embodiment of Life Katherine[/b]
LIGHT / Fairy / Synchro
Level 7
?/?
1 Tuner monster + 1 or more non-Tuner monsters
If your Life Points are higher than your opponent's, this card's ATK and DEF are equal to half the difference between your Life Points and your opponent's Life Points. Once per turn, you can Tribute 1 other monster you control to gain Life Points equal to that monster's Level x500.

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[b]Embodiment of Life Alcya[/b]
LIGHT / Fairy / Synchro
Level 10
3500/4000
1 Tuner monster + 2 or more non-Tuner monsters
When this card is Synchro Summoned, place 1 "Cure Counter" on this card for every 4000 Life Points you have. You can remove 1 "Cure Counter" from this card to negate the activation and effect of a Spell or Trap card and destroy it. If your Life Points are lower than the opponent's, destroy this card.

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[b]Spring of Life[/b]
SPELL / Normal
Tribute 2 "Embodiment of Life" monsters you control. Gain Life Points equal to your current Life Points.

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[b]Chaos Priestess[/b]
DARK / Spellcaster
Level 7
2700/2000
You can Special Summon this card from your hand by returning 1 of your removed from play DARK monsters and 1 of your removed from play LIGHT monsters to your Graveyard. Once per turn, you can select 1 other face-up monster on the field and gain Life Points equal to that monster's ATK, then deal damage to your opponent equal to that monster's DEF.

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More will come, including some versatile support. Let me know what you think.

[Horu]

You are aware that the duel is more likely to end before your LP reach 40k, right?