Mravava, Hoaxing Aide

Defender, Indestructible
When your Opponents play their commander,
put a Lurking counter on Mravava. Mravava
gets a +1/+1 for each Lurking counter on it.
Creatures can't attack you unless their controller
pays X for each creature they control that's
attacking you, where X equals Mravava's Lurking counters.
When Mravava has five Lurking counters,
Mravava looses Defender and gains Shroud.
"I'm helping, I swear..."