SomeBlueRockThing

: Whenever you cast an artifact spell, you may cast an artifact spell with converted mana cost 5 or less without paying it's mana cost.
+2: Draw 3 cards, you may play one of those cards without playing their mana cost, if an artifact spell was cast this way, draw 2 more cards.
-8: Exile the top eight cards of your library, you may play those cards without paying their mana costs this turn.