Spirit Island: Jagged Earth

Isolate prevents Invaders from Exploring into that land and makes it not a source of Explorers; it also makes the land be treated as non-adjacent for Invader movement unless you deliberately allow adjacencies for a given Action, and it only lasts the current turn (it does not affect Blight cascades or whether a land is Coastal). (p.10)

Any Invader or Dahan that “does not participate in Ravage” is ignored for the Ravage Step and Actions in that land: it doesn’t cause the land to Ravage, doesn’t deal or take Damage during that Ravage, and doesn’t count for checks tied to the Ravage. (p.14)

If a space has no card, that Invader step does nothing; if there are multiple cards, resolve each card separately (the card that arrived first—on the bottom—resolves first), and when advancing cards they all move together to the next space. (p.11)

For an “Aided by” cost, each matching Element you have in play counts as +1 Energy, discarding a Power Card with that Element counts as +2, and Forgetting such a card counts as +4; these are only contributions toward paying the Event cost and do not give you real Energy, and each Power Card may be used for only one such bonus. (p.13)

Strife placed under a specific Invader makes that Invader deal exactly 0 Damage the next time it would Damage Dahan/land (then the Strife is removed), and if boosted Damage would apply to an Invader with Strife, Strife cancels it per the timing rules; Badlands add +1 Damage per Badlands the first time each Action Damages Invaders or Dahan in that land (only once per Action and not if Damage is reduced to 0). (p.7–8)

An Action is a grouped set of instructions such as one use of a Power, one land’s Ravage/Build/Explore, or everything one Event/Fear does, and many effects care about Actions (you check Victory/Defeat at the end of an Action and things like Badlands bonuses or certain Adversary effects apply once per Action); note the “Each” exception: “Each Board/Player/Spirit/Land” creates separate Actions for each. (pp.10, 24)