Storm Lattice is a legendary major card out of the New mechanic pool. Arc Bolt forks: every bolt chains to 3 further enemies but no longer pierces, at −20% damage.

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 Orbital Bolt and Heavy Bolt Cannon. Take one and the rest are gone for the run.