Renegade Overclocker

{2}{u}, {t}: End the phase. If it's not your turn, sacrifice Renegade Overclocker. (The phases are beginning, precombat main, combat, postcombat
main, and ending.)
Channel — {4}{u}{u}, Discard Renegade
Overclocker: End the turn. (Exile all spells and abilities from the stack. The player whose turn it is discards down to their maximum hand size. Damage
wears off, and "this turn" and "until end of turn"
effects end.)