Twisted Riddlekeeper
From Modern Horizons 3 set
Twisted Riddlekeeper
Creature — Eldrazi Sphinx
5/5
Emerge
(You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value.)
When you cast this spell, tap up to two target permanents. Put a stun counter on each of them. (If a permanent with a stun counter would become untapped, remove one from it instead.)
Flying