Does Machines

(Gain the next level as a sorcery to add its ability.)
When this Class enters, mill two cards, draw two cards, then discard two cards.
{1}{U}: Level 2
When this Class becomes level 2, return up to two target artifact cards from your graveyard to your hand.
{4}{U}: Level 3
At the beginning of combat on your turn, put three +1/+1 counters on target artifact you control. If it isn't a creature, it becomes a 0/0 Robot creature in addition to its other types.

（次のレベルになることはソーサリーとして行う。そのレベルの能力を得る。）
このクラスが戦場に出たとき、カード２枚を切削し、カード２枚を引き、その後、カード２枚を捨てる。
{1U}：レベル２