Spark counter

Spark counters are a type of counter introduced on a test card in the Mystery Booster. They are related to the Spark keyword action and used to activate spark abilities.
==Description==
Spark counters first appeared on the test card <c>Blood Poet</c> in the Mystery Booster. They are tied to the Spark keyword action which let the player activate one spark ability per turn by spending or giving themselves one of the counters. They are similar to Loyalty ability and Loyalty counters but on creatures instead of planeswalkers.