Toh Rockshell

At the beginning of your endstep you may choose
to skip your next turn. If you do, Toh Rockshell
gains double strike until the end of your next turn.
If you have skipped a turn before this one, when
Toh Rockshell attacks, untap it. There is an additional combat phase after this one.
Toh Rockshell gains +1/+0 for each time you
have skipped a turn this game.