Anomander Rake

{t}: Exile target creature or planeswalker an
opponent controls and put a chain counter on it.

If there are three or more exiled cards with chain
counters on them, Anomander Rake is an 8/8
Dragon with flying, menace, and vigilance.

When Anomander Rake dies, return one
permanent card with a chain counter on it to its
owner's hand and put the rest in their graveyard.