Janna

Because unattended gear at battlefields are recalled, Edge of Night does a strange little dance on its way to becoming attached, returning to your base while its ability is on the chain. And because of that dance, it’s no longer “here” when the attachment is supposed to happen. We need to change its wording so it can still find the unit you chose.

But we don’t want any confusion here—the card works exactly the same as it did before. The Hidden rules still require that you choose a unit at the battlefield where you played it from face down. For that reason, we’ve included reminder text in the errata.

Edge of Night (revised text)

[Hidden] (Hide now for [A] to react with later for [0].)

When you play this from face down, attach it to a unit you control (here).

[Equip] [C] ([C]: Attach this to a unit you control.)

Janna, Savior

Source: Riftbound Spiritforged FAQ

Triggered abilities in Riftbound can’t be placed on the chain unless all required targets can be chosen. They can resolve and perform part of their text without all targets still being available, but all targets must be available to put them on the chain to begin with. This is weird, and we generally try not to force players to know it. We think 99% of players probably expect that Janna can heal their units without enemies present, so we’re meeting that expectation with a simple “up to,” similar to some “up to” errata for triggered abilities in Origins.

Janna, Savior (revised text)

[Reaction] (Play any time, even before spells and abilities resolve, including to a battlefield you control.)

When you play me, heal your units here, then move up to one enemy unit from here to its base.

Jax, Unmatched

Source: Riftbound Spiritforged FAQ

Current wording

Previous wording

Source: Riftbound Spiritforged Errata