Star Spring

Q: Can multiple players trigger Star spring each turn?

A: Yes. Star Spring condition’s phrasing allows each player to trigger its ability once. The condition “When a player plays a non-token unit here for the first time” returns in fact “TRUE” when both Player A and Player B play their first unit there; the focus is on “When a player…for the first time” (Dreaming Tree worked the same way).

The wording for the condition to make the ability trigger only for the first ever non-token unit played there would have been “When a non-token unit is played here for the first time”.

Q1: Can I decide to not trigger <<Star Spring>> when I play a non-token unit there?

A1: Yes.

Q2: Similarly, if I choose to trigger <<Valley of Idols>>, does the cost need to be paid on finalization or resolution?

A2: Finalization.

Rules for Context - “they may” vs. “you may”, 383.3.a., 383.3.b.