Whenever you cast an artifact spell, you get (an energy counter).
, Pay : Target creature gets +1/+0 and gains trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.) and haste (This creature can attack, and as soon as it comes under your control.) until end of turn.
, Pay : Draw a card.
, Pay : Return target artifact card from your graveyard to the battlefield tapped.
Vintage
Modern
, Pay 
as soon as it comes under your control.)