Growth Spiral

Draw a card. You may put a land card from your hand onto the battlefield.

Mana Leak

Counter target spell unless its controller pays {3}.

Frilled Mystic

Flash
When Frilled Mystic enters, you may counter target spell.

Prophet of Kruphix

Untap all creatures and lands you control during each other player's untap step.
You may cast creature spells as though they had flash.

Fact or Fiction

Reveal the top five cards of your library. An opponent separates those cards into two piles. Put one pile into your hand and the other into your graveyard.

Mystical Teachings

Search your library for an instant card or a card with flash, reveal it, put it into your hand, then shuffle.
Flashback {5}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)