Spark Elemental

Trample, haste (This creature can deal excess combat damage to the player or planeswalker it's attacking. This creature can attack and {T} as soon as it comes under your control.) At the beginning of the end step, sacrifice this creature.

Vulshok shamans could never keep them alive for more than a few seconds, yet those few seconds seemed to be enough.

Power / Toughness: 3/1