Tsk, Forgetful Cleric

When Tsk, Forgetful Cleric enters the battlefield,
exile the top 5 cards of your library face down.
Keep only the top card revealed. You may cast the
top card as if it had flash. When each card that was
exiled by Tsk entering the battlefield is played, all
creatures gain a +2/+2. Choose one card from the
exiled pile. You may cast a copy of that spell at any
time.
{1}{ut} Target Permanent gains protection from
Red and Black until end of turn.