Knull, King in black

Indestructible Menace
When Knull, King in Black enters the battlefield put two symbiote tokens down that take control of two target player's creatures.
At the beginning of upkeep, you can pay {3}{b} draw two extra cards flip them upside down as symbiotes with the same abilities if they're not creatures put them in you're hand.
If Knull, King in Black has the Necro Sword every time you draw you put a +1/+1 counter on Knull.
"I've been waiting..."