Adric, Mathematical Genius (WHO 942)

Legendary Creature — Human Artificer • Mana cost: {1}{U} • Doctor Who • Rare

{2}{U}, {T}: Copy target activated or triggered ability you control. You may choose new targets for the copy.
Ultimate Sacrifice — {1}{U}, Sacrifice Adric: Counter target activated or triggered ability.
Doctor's companion (You can have two commanders if the other is the Doctor.)

Illustrated by Billy Christian.