My summon combo

[Decimater]

Grace before impact:
You can only activate this card when you would take 2000 points or more of battle damage. All battle damage this turn is reduced to 0. Remove up to 3 monsters in your graveyard from Play to special summon "Aero, The Severity of Impact" from your hand, deck, or graveyard to your side of the field in face up ATK mode.

Aero, The Severity if Impact:
Dark. Lvl 10 warrior/effect
This card cannot be normal summoned or set. This card can only be special summoned by the effect of "Grace Before Impact". This card gains ATK/DEF equal to the combined ATK/DEF of the monsters removed from play. This card can gain the effect of 1 of the monsters removed from play.
ATK/? DEF/?

[Zowayix]

Corrected text:

Grace Before Impact:
"Activate when you would take 2000 or more Battle Damage. Reduce all Battle Damage taken this turn to 0. You can remove up to 3 monsters in your Graveyard from play to Special Summon "Aero, The Severity of Impact" from your hand, Deck, or Graveyard in face-up Attack Position."

Aero, The Severity of Impact:
"This card cannot be Normal Summoned or Set. This card can only be Special Summoned by the effect of "Grace Before Impact". This card's ATK and DEF are equal to the combined ATK/DEF of the monsters removed from play to Special Summon this card. This card can gain the effect of 1 of the monsters removed from play to Special Summon this card."

I think the second card is overpowered. You could drop a powerful monster like Judgment Dragon into the Graveyard with Foolish Burial, activate Grace Before Impact, and essentially Special Summon JD back to the field using only 2 cards.

[Decimater]

Ok ok well how about you can only remove 2 monsters with 2000 ATK or less?
That sounds good to me. Thanks!