3 cards

[Vengevoid]

Hey so i have two cards that is already been balanced by yours truly. Theres one card i made that i wasnt too sure of. I have these 3 already in ygopro beta use only. The first two cards are balanced but check the 3rd card (still playing around with it).

1. Demonic Voidslayer, Ben
Dark, Warrior, level 8, 2700 atk, 2500 def
"When this card attacks a Defense Position monster, if the attack target is a non-DARK monster during the Damage Step, inflict piercing battle damage to your opponent. Once per turn, you can banish 1 DARK monster from your graveyard to target 1 face-up monster your opponent controls; its ATK becomes 0, and if it does, its effects are negated."

Explanation: the effect is powerful but its level 8 so it will require a tribute summon or special summoned with the next card under certain conditions. But this card can work in any deck for dark monsters.

2. Voidmasters' Hall
Field Spell
(This card is always treated as a "Voidslayer" card.)
When you activate this card, banish the top 5 cards of your deck. Once per turn, this card cannot be destroyed by card effects. If this card is destroyed and sent to the graveyard: You can banish 1 "Demonic Voidslayer, Ben" from your graveyard; Special Summon 1 "Rebellious Voidslayer, Ben X" from your Extra Deck. Once per turn, you can activate one of these effects. You can only activate 1 of these "Voidmaster's Hall" effects once per turn and only once that turn.
●You can pay 1000 life points and select 1 of your banished "Voidslayer" cards and add it to your hand.
●You can Special Summon 1 "Voidslayer" monster from your hand. You must control no monsters to activate and to resolve this effect.

Explanation: To get the best Voidslayer cards to your hand, it requires luck. First effect bullet, you can grab any card in that archetype but the cost will balance the usage. Second effect is like Vahalla, Hall of the Fallen. The destruction effect to special summon the 3rd card is sort of difficult because it requires alot of interaction because not only you or your opponent have to kill this card twice after it resolves but also u need the 1st card in your graveyard for a cost. 

3. Rebellious Voidslayer, Ben X
Dark, warrior, fusion, lv 12, 5000 atk, 3700 def
Must be Special Summoned with "Voidmaster's Hall" and cannot be Special Summoned by other ways. This card deals Piercing Damage. Once per turn: you can pay half your life points; banish all cards your opponent controls and all cards in your opponent's hand and graveyard, then inflict 500 damage to your opponent for each card banished by this effect. This card cannot attack the turn you use this effect.

Explanation: Now this might be too much but im still working on this. This card might be a bit broken but compare this to Chaos End Ruler because CER can attack on the turn its effect resolves while this card, you have to wait til your next turn to finish the duel. Like i said this card is hard to summon (maybe read explanation for the 2nd card). Like we're talking 5000 atk tyrant that can wipe your opponent's supply of cards.

So let me know what i can change within some of the cards, cant promise to change them but i will definitely make changes to the last card. In any case , thanks in advance.