Mirelurk King

Menace
Tap a Radioactive land you control: Mirelurk
King gets +1/+1 for every other Mirelurk you
control until end of turn.
Tap two Radioactive lands you control: put a
+1/+1 counter on every other Mirelurk you
control.
Tap three Radioactive lands you control: every
other Mirelurk you control can't be blocked until
the end of the turn.