Temporal Manipulation

Future Sight

Play with the top card of your library revealed.
You may play lands and cast spells from the top of your library.

Stormscape Familiar

Flying
White spells and black spells you cast cost {1} less to cast.

Yennett, Cryptic Sovereign

Flying, vigilance, menace
Whenever Yennett attacks, reveal the top card of your library. You may cast it without paying its mana cost if its mana value is odd. If you don't cast it, draw a card.

Mind's Dilation

Whenever an opponent casts their first spell each turn, that player exiles the top card of their library. If it's a nonland card, you may cast it without paying its mana cost.