Return of the dragons

[DivineSkyDragonOsiris]

1, Mystic Guardian Dragon
[img]http://img842.imageshack.us/img842/2734/437331.jpg[/img]
While this card is face-up on the field, once per turn, you can negate the attack of an opponent's monster. Also, during your opponent's turn, if a card's effect that would inflict damage to your Life Points is activated, you can Tribute this face-up card to negate the effect and inflict your Life Points by the same amount.

2, Lava Controller Dragon
[img]http://img508.imageshack.us/img508/2734/437331.jpg[/img]
Once per turn, during your Standby Phase, inflict 200 damage to your opponent's Life Points for each face-up Dragon-Type monster you control. When this card battles a WATER monster, it gains 500 ATK during the Damage Step only.

3, Twin-Headed Serpenterra
[img]http://img221.imageshack.us/img221/3540/437331ive.jpg[/img]
You can remove from play 1 Level 4 or lower Dragon-Type monster in your graveyard to Special Summon this card from your hand. If you Tribute Summon a Level 7 or higher Dragon-Type monster, you can treat this face-up monster as 2 Tributes.

4, Megafire the Sky Terror
[img]http://img269.imageshack.us/img269/6131/437331g.jpg[/img]
1 Tuner + 1 or more non-Tuner Dragon-Type monsters
When this card is Synchro Summoned, you can destroy all Defense Position monsters your opponent controls. As long as this card remains face-up on the field, a player take 1000 Life Point Damage each time he/she Special Summons a Token monster(s).

[byak]

This forum can only have one Osiris.

>:I

[DivineSkyDragonOsiris]

Sorry, but look like it's may have 2. ^^

[ragnarok1945]

Lava Controller Dragon's burn is too weak, you should have made it 200 or 300

overall the effects are good, I'll give you 9/10