Silver The Hedgehog

Flash Haste Flying Vigilance

At the beginning of your upkeep, make a silver coin token ({t}- add {c} and put a stun counter on this artifact)

Whenever you tap an artifact for mana, silver gets +1|+1 until end of turn.

Creatures you cast with mana produced by artifacts get "Whenever an artifact enters the battlefield, this creature get +1|+1 until end of turn."