Satya, Aetherflux Genius
From Modern Horizons 3 Commander set
Satya, Aetherflux Genius
Legendary Creature — Human Artificer
3/5
Menace, haste
Whenever Satya attacks, create a tapped and attacking token that's a copy of up to one other target nontoken creature you control. You get
(two energy counters). At the beginning of the next end step, sacrifice that token unless you pay an amount of
equal to its mana value.