Reinhardt, Shieldbearer

Defender
At the beginning of your upkeep, you may
transform. If you don't, secretly write "earthshatter" or "firestrike" on a piece of paper. Target opponent guesses which you wrote. If they guessed wrong and you wrote "earthshatter", tap
up to three untapped target creatures they
control. If they guessed wrong and you wrote "firestrike", deal 2 damage to that player twice. Otherwise, tap Reinhardt Shieldbearer.