Aethersurge Conductor

Haste (This creature can attack and {t} as soon as it comes under your control.)
When this creature enters the battlefield, it gets +X/+X until end of turn, where X is equal to the number of energy counters you have.
Splice onto Artificer - Pay {e} (As you cast an Artificer spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)