Absorption Dome is a M Mechanologist Action - Item card from Flesh and Blood (Crucible of War, CRU).
M
Crucible of War (CRU)
Card Text
Absorption Dome enters the arena with steam counters on it equal to the number of times you have boosted this turn.
If your hero would be dealt damage, remove that many steam counters from Absorption Dome instead, then prevent damage equal to the number of steam counters removed this way.
When Absorption Dome has no steam counters on it, destroy it.