Goblin Piledriver [Onslaught] World Magic Cup Qualifiers return it to the battlefield

return it to the battlefield under its owner's control with a +1/+1 counter on it

−X: Search your library for an artifact card with mana value X or less

we strike first

remove a +1/+0 counter from it

Set: Conspiracy: Take the Crown Type: Instant Rarity: Mythic Cost: {G} Cast this spell only before the combat damage step

Goblin Piledriver [Onslaught] World Magic Cup Qualifiers return it to the battlefieldSet: Onslaught Type: Creature Goblin Warrior Rarity: Rare Cost: {1}{R} Protection from blue (This creature can't be blocked, targeted, dealt damage, or enchanted by anything blue.) Whenever Goblin Piledriver attacks, it gets +2 +0 until end of turn for each other attacking Goblin. Throw enough goblins at any problem and it should go away. At the very least, there'll be fewer goblins.