Heretic Eradicator 

Level 7 EARTH 

Warrior / Effect 

You can only use each of the [1] [2] effects of this card once per turn.

[1] When your opponent would Special Summon exactly 1 monster while they have 4 or more monsters that cannot be Normal Summoned on their face-up field, in their GY and/or banishment and this card is in your hand (Quick Effect): You can negate that Special Summon, and if you do, destroy it, and if you do, Special Summon this card. If you control no monsters, this activation and effect cannot be negated.

[2] You can send this card on the field to the GY: Half the ATK of 1 monster on the field.