War Mammoth [Introductory Two-Player Set] 190 other Rats you control get

other Rats you control get +X/+X until end of turn

Set: Duelist Pack: Dimensional Guardians Card type: Fusion/Effect Monster Rarity: Super Rare Attack: 3000 Defense: 2200 1 "Edge Imp" monster + 1 "Fluffal" monster When this card destroys an opponent's monster by battle: You can inflict 1000 damage to your opponent

or Wyrm monsters

then you can apply this effect

first strike

War Mammoth [Introductory Two-Player Set] 190 other Rats you control getSet: Introductory Two Player Set Type: Creature Elephant Rarity: Common Cost: {3}{G} Trample I didn't think Mammoths could ever hold a candle to a well trained battle horse. Then one day I turned my back on a drunken soldier. His blow never landed; Mi'cha flung the brute over ten meters.