Scrap Welder

When this creature enters, you may search your library for an artifact card, put it into your graveyard, then shuffle.

, , Sacrifice an artifact: Return target artifact card with mana value 3 or less from your graveyard to the battlefield.

Haste

, Sacrifice an artifact: Put a +1/+1 counter on each Goblin you control.

Whenever an artifact is put into a graveyard from the battlefield, you may pay . If you do, create a 1/1 red Goblin creature token. It gains haste until end of turn.

Whenever a nontoken artifact enters the battlefield under your control, exile a random nonland artifact card with lesser mana value from your library. You may cast that card until the end of your next turn.

Whenever you cast an artifact spell, you get (an energy counter).

, Pay : Target creature gets +1/+0 and gains trample and haste until end of turn.

, Pay : Draw a card.

, Pay : Return target artifact card from your graveyard to the battlefield tapped.

, , Sacrifice an enchantment: Return target enchantment card from your graveyard to the battlefield.

Sacrifice an artifact: This creature gains haste until end of turn.