The Chitin

Flying
The Chitin can't attack or block.
Whenever a creature you control is sent to the graveyard, put a -1/-1 counter on The Chitin.
{w}{u}{b}{r}{g}, remove 5 -1/-1 counters from
The Chitin: The Chitin gains the ability to attack
and block.
{c}{c}: Remove a -1/-1 counter from The Chitin.
Any player may activate this ability.