You can only activate 1 "Trial and Tribulation" per turn. During the End Phase of the turn this card was activated, apply this effect, depending on the number of monsters you Tributed from the field and from your hand this turn, except Tokens.● 1: Draw 1 card.● 2: Add 2 monsters from your Graveyard to your hand.● 3+: Destroy up to 3 face-up cards on the field.
Not really, since you should win already after you summoned Ra.
Ra is a finisher, so it's not necessary to destroy opponent's cards during the end phase, you don't even get to the end phase since you should immediately win after dealing damage with Ra.
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