Well of Lost Dreams

At the beginning of combat on your turn, create a token that's a copy of equipped creature, except the token isn't legendary. That token gains haste. Equip 5

When this creature enters, you may search your library for an Assembly-Worker creature card, reveal it, put it into your hand, then shuffle.

1, T, Sacrifice this artifact: Add one mana of any color. When this artifact is put into a graveyard from the battlefield, draw a card.

Equipped creature gets +1/+0. Equip 1 (1: Attach to target creature you control. Equip only as a sorcery.)

At the beginning of each player's draw step, if this artifact is untapped, that player draws an additional card.

As this artifact enters, choose a color. Creatures you control of the chosen color get +1/+1. Whenever a land's ability causes you to add one or more mana of the chosen color, add an additional one mana of that color.

Untap all artifacts you control during each other player's untap step.

Whenever equipped creature attacks alone, it gets +1/+1 until end of turn for each other creature you control. Equip 1 (1: Attach to target creature you control. Equip only as a sorcery.)