Spark (keyword action)

Spark is a keyword action that appeared on a test card in the Mystery Booster set. It allows players to activate spark abilities by spending or giving themselves spark counters. Only one spark ability may be activated per turn, and only as a sorcery. Spark abilities act exactly like loyalty abilities, except that spark counters belong to the player, not to the card, similar to energy counters.

Rulings

 * You can activate only one spark ability from among permanents you control each turn, no matter how many permanents you control with spark abilities.
 * If Blood Poet loses spark, its spark abilities can't be activated.