Goblin Throne Pretender

Whenever Goblin Throne Pretender enters the battlefield, reveal the top six cards of your library.
For every creature, flip a coin. Create X 1/1
Goblin creature tokens, where X is the number
of Tails made. Return revealed cards and shuffle.
{t}{r}{r}{r}: If Muxus, Goblin Grandee is on the battlefield, flip a coin. On heads, exile Goblin
Throne Pretender—on tails, exile Muxus,
Goblin Grandee and replace him with this card.
"Even if his claim is false, his supporters
sure believe him."