The Marvelous Scientist (Unknown Event #RZ04j)

The Marvelous Scientist {1}{U}{R}

Legendary Creature — Human Wizard

As this creature enters the battlefield, choose cosplay or science.

Cosplay — Whenever you cast a creature or planeswalker spell, this creature’s base power and toughness each become equal to that spell’s mana value until end of turn.

Science — Whenever you cast an instant or sorcery spell, this creature deals 2 damage to each opponent.

2/2
Standard
Alchemy
Pioneer
Explorer
Modern
Historic
Legacy
Brawl
Vintage
Timeless
Commander
Pauper
Oathbreaker
Penny