The first time Alluvion Constellas prevents arcane damage each turn, if it has less than 4 energy counters, you may put an energy counter on it. Instant - Remove 2 energy counters from Alluvion Constellas: The next staff ability you activate this turn costs {r}{r}{r} less. Arcane Barrier 1 (If your hero would be dealt arcane damage, you may pay {r} to prevent 1 of that damage.)