Standard turn 4 win

, : This artifact deals 1 damage to any target.

Draw X cards.

Artifact spells you cast cost less to cast.

: Untap target artifact.

Whenever a nontoken creature you control enters, you may pay . If you do, create a token that's a copy of that creature, except it has haste and "At the beginning of the end step, sacrifice this permanent."

+1: Untap up to two target artifacts. −X: Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle. −5: Artifacts you control become artifact creatures with base power and toughness 5/5 until end of turn.

When this artifact enters, return two lands you control to their owner's hand. : Add two mana of any one color.

Search your library for an artifact card, reveal it, put it into your hand, then shuffle.

Activated abilities of creatures you control cost less to activate. This effect can't reduce the mana in that cost to less than one mana.