Kril, the Shell-less

When Kril enters the battlefield, reveal the
top card of you library till you reveal a shell
card. Place that card onto the battlefield
equipped to Kril. Any damage dealt to Kril
is instead redirected to the shell attached to
him. Whenever a shell is equiped onto Kril,
put a +1/+1 counter on Kril.

You may equip shells on Kril at instant speed.
Kril can only have one shell equipped at once.