Human Torch
Legendary Creature — Human Hero
What the Card Says
At the beginning of combat on your turn, if you've cast a noncreature spell this turn, Human Torch gains flying, double strike, and haste until end of turn. Whenever Human Torch attacks, you may pay {R}{G}{W}{U}. If you do, until end of turn, whenever he deals combat damage to an opponent, he deals that much damage to each other opponent.
What Does That Mean
This is a 3/2 creature that rewards you for casting noncreature spells.
At the start of combat, if you've cast a noncreature spell that turn, Human Torch gains flying, double strike (hits twice in combat), and haste (can attack immediately).
Additionally, you can pay four mana of different colors when he attacks to make his combat damage hit all opponents instead of just one.
Why Is That Important
Human Torch fits perfectly into spell-slinging decks that cast lots of instants and sorceries alongside creatures, as it naturally synergizes with your noncreature spell casting.
The double strike effect combined with flying makes him a serious threat that grows more dangerous with each spell you cast.
The second ability is particularly strong in multiplayer formats (like Commander), where you can redirect his damage to punish all opponents simultaneously, turning him into an efficient finisher that scales with your spell-heavy strategy.