With it also having Shift 3, that means that players could potentially play this card pretty early in the game, and it would be wonderful to use in tandem with a card like Pawpsicle, which can be banished to remove two damage from a card
Cliffs of Contradiction Plane: Inversia When you planeswalk to Cliffs of Contradiction, or at the beginning of your upkeep, manifest the top card of your library
Umbris gets stronger all the while too, giving it +1/+1 for each card your opponents own in exile, which can quickly turn them into a powerhouse on the battlefield
Ive used Jumpluff quite a bit, and from what I can tell its fast enough to get going before most Stage 2 decks do
Just make sure to include Gravitational Shift or Always Watching to keep things up in the air
That trend continues here