Vennia, Sanguine Mistress

Flying
Whenever a source you control deals noncombat damage to a permanent, gain control of it. It gains
"at the beginning of your end step, sacrifice this permanent unless you own it".If it's a creature,
untap it and it gains haste and indestructible until
end of turn.
"There is merit to claw and fire, yes, but you'd be surprised at the power the subtle art of blood magic provides." -Vennia