They wanted an effect that captured the flavor of refraction and tied into the ETB effect, so they ended up with a triggered effect that dealt damage to the opponent whenever you cast a spell
When damage on a location equals or exceeds the locations Willpower, they are banished and the card is put into the discard pile
But which ramp spells are the best
I hope you can see the value of a Nissa, and she gets better the more lands you have in the later game with a full graveyard
The two new cards which play well with the cycling portion of the deck, either direction youre headed, are Herald of the Forgotten and Crystalline Resonance
Chandra, Flamecaller For , Chandra, Flamecaller enters with four Loyalty Counters and three abilities that help her generate pressure, control the battlefield, and keep your hand moving