how many mtg cards are there total 1000 Magic the Gathering Lot w/ Rares and Foils INSTANT COLLECTION !!! : Toys & Games All MTG sets and Magic:

If the target creature is an illegal target when Fell the Mighty tries to resolve, Fell the Mighty won't resolve and none of its effects will happen

If tapping a creature using convoke wouldn't pay for any mana in that spell's cost (because you've already paid for all of the mana in the spell's cost by tapping other creatures or because you've already paid for all of the generic mana in the cost by tapping other creatures and the creature you want to tap doesn't share a color with any of the remaining mana symbols in the spell's cost), you can't use convoke to tap that creature

And leave a 4/4

Impulse has really been powerful in implementing a strong game across the years, and it's an iconic card from this Block