Orbit is a legendary major card out of the New mechanic pool. Arcane Orb circles you at 2.5 u for 4 s instead of flying, then drifts out 6 u and bursts.

You can take it once · it only turns up when your Main ability can actually use it · it can be offered for 0 of the 34 abilities.

Only one card can reshape that ability this way — this one, or Twin Orbs and Cannon Orb. Take one and the rest are gone for the run.