Skyrider Elf

Whenever this creature attacks, defending player exiles two permanents they control.

When you cast this spell, you may put two cards your opponents own from exile into their owners' graveyards. If you do, create three 1/1 colorless Eldrazi Scion creature tokens. They have "Sacrifice this token: Add C."

All creatures able to block this creature do so.

When you cast this spell, you may search your library for a colorless creature card with mana value 7 or greater, reveal it, then shuffle and put that card on top. The first creature spell you cast each turn costs 2 less to cast.

Vigilance Sacrifice two Eldrazi Scions: Return this card from your graveyard to your hand. Activate only as a sorcery.

When you cast this spell, create a 10/10 colorless Eldrazi creature token.

Trample

This creature enters with X +1/+1 counters on it.