Aegar, the Freezing Flame (MUL 31)

Legendary Creature — Giant Wizard • Mana cost: {1}{U}{R} • Multiverse Legends • Uncommon

Whenever a creature or planeswalker an opponent controls is dealt excess damage, if a Giant, Wizard, or spell you controlled dealt damage to it this turn, draw a card.

Though Phyrexian machines could adapt to extremes of heat or cold, they never figured out how to adapt to both at once.

Illustrated by Richard Luong.