The Chosen Undead

Whenever another creature dies, put a +1/+1
counter on The Chosen Undead. If that creature
was legendary, also put a counter of your choice
on The Chosen Undead from first strike, lifelink,
menace, trample, or wither.
Remove two counters from The Chosen
Undead: Regenerate The Chosen Undead.
"Thou who art Undead, art chosen." — Oscar,
Knight of Astora