Whenever a permanent you control is put into a graveyard, you get (an energy counter).

, Pay six : Look at the top six cards of your library. You may cast a spell from among them without paying its mana cost. Put the rest on the bottom of your library in a random order.

, : Put a +1/+1 counter on Drillworks Mole and a +1/+1 counter on up to one target commander creature you control.

Izzet Boilerworks enters tapped.

When Izzet Boilerworks enters, return a land you control to its owner's hand.

: Add .

Whenever another nontoken artifact you control enters, you may pay . If you do, create a token that's a copy of that artifact.

2 — Whenever this creature attacks, you gain 2 life.

3 — Vigilance, reach

2 — 2/4

5 — 7/7

At the beginning of your end step, this Room deals 1 damage to each opponent.

(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

As Tanglespan Bridgeworks enters, you may pay 3 life. If you don't, it enters tapped.

: Add .

When Workshop Assistant dies, return another target artifact card from your graveyard to your hand.

Trample

When Workshop Warchief enters, you gain 3 life.

When Workshop Warchief dies, create a 4/4 green Rhino Warrior creature token.

Blitz (If you cast this spell for its blitz cost, it gains haste and "When this creature dies, draw a card." Sacrifice it at the beginning of the next end step.)