Spark Elemental

Trample, haste
At the beginning of the end step, sacrifice Spark Elemental.

Ultimate Masters Tokens

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

Premium Deck Series: Fire and Lightning

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 Spark Elemental.

Tenth Edition

Trample, haste
At end of turn, sacrifice Spark Elemental.

Vulshok shamans summon spark elementals to burn paths through thick underbrush—or through goblin salvage squads.

Fifth Dawn

Sparkspitter

{R}, {T}, Discard a card: Create a 3/1 red Elemental creature token named Spark Elemental. It has trample, haste, and "At the beginning of the end step, sacrifice Spark Elemental."