The Ghoul, Eternal Outlaw

Undying, Menace, Vigilance
Whenever The Ghoul, Eternal Outlaw attacks,
detain target permanent blocking opponent controls.
Improvise, Adapt, Overcome - Whenever you detain
a permanent, The Ghoul, Eternal Outlaw gains the triggered and activated abilities of the detained permanent until your next turn. You may spend
mana as though it were mana of any color to
activate those abilities.