Maliketh, the Black Blade

Haste, vigilance, double strike
Maliketh, the Black Blade must attack each
combat if able.
As long as Maliketh, the Black Blade is on the battlefield under your control, all creatures you control get indestructible and hexproof.
Whenever Maliketh, the Black Blade does kills a creature, exile that creature and put a +1/+1
counter on Maliketh, the Black Blade.