N'kari, Arch-tempter

Menace, Haste, First Strike
Whenever one or more Slaaneshi creatures you control attack, gain control of target creature
until end of turn. That creature is tapped and attacking. (You choose who or what it is attacking.)
Creatures you control but don't own are
Slaaneshi in addition to their other types.
Slaaneshi creatures you control have menace.