Secret Lair Drop

Instant

The owner of target permanent shuffles it into their library, then reveals the top card of their library. If it's a permanent card, they put it onto the battlefield.

Chaos Warp

Artifact — Equipment

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.)
Equip {0}

Lightning Greaves

Equipped creature gets +1/-1.
Whenever equipped creature dies, draw two cards.
Equip {1}

Skullclamp

Artifact

You have no maximum hand size.
{T}: Add {C}.

Thought Vessel

Command Tower // Command Tower

Tower Winder

Land

{T}: Add one mana of any color in your commander's color identity.