Basalt Boots

If you control a Seismic Surge token, this gets +1

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Temper

Rulings

From the Compendium of Rathe release notes

Basalt Boots’ ability generates a conditional continuous effect that is always checking as long as it is face-up in the arena. If you control a Seismic Surge token, this gets +1.
If you control a Seismic Surge token when this defends, then you lose that token, this will lose the +1.
If a Seismic Surge token is created during the damage step and causes the if-conditional effect to become active, it will get the +1 but the damage will not be recalculated.

Keyword notes

Temper - Temper is a new keyword that exists on equipment in Crucible of War. Usually high in defense, Temper equipment presents a choice when it is down to 1{d}, of whether to defend with it one last time and see it destroyed, or save it to use for its ability.