As long as The Aetherspark is attached to a creature, The Aetherspark can't be attacked and has "Whenever equipped creature deals combat damage during your turn, put that many loyalty counters on The Aetherspark."
+1: Attach The Aetherspark to up to one target creature you control. Put a +1/+1 counter on that creature.
−5: Draw two cards.
−10: Add ten mana of any one color.
Colour identity Colorless
In short
The Aetherspark has 5 listed printings; the most valuable is the Serialized printing from DFT at US$1,875 on TCGplayer's market price. Prices below are the cheapest in-stock listing in the United States.
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