DJ, the Answer King

When DJ enters, choose one or more:
•If {w} was used to cast DJ, exile target nonland permanent until DJ leaves the battlefield.
•If {u} was used to cast DJ, tap target creature. It doesn’t untap until DJ leaves the battlefield.
•If {b} was used to cast DJ, draw 2 cards and lose 2 life.
{bull}If {r} was used to cast DJ, draw 2 cards, then discard 2 cards.
{bull}If {g} was used to cast DJ, it enters with 2 +1/+1 counters and gains trample.
{bull}If life was paid to cast DJ, return a