Reliquary Tower

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

Swamp

Pip-Boy 3000

Whenever equipped creature attacks, choose one —
• Sort Inventory — Draw a card, then discard a card.
• Pick a Perk — Put a +1/+1 counter on that creature.
• Check Map — Untap up to two target lands.
Equip {2}

Accursed Marauder

When this creature enters, each player sacrifices a nontoken creature of their choice.

Jet Medallion

Black spells you cast cost {1} less to cast.

Plains

Pearl Medallion

White spells you cast cost {1} less to cast.

Butch DeLoria, Tunnel Snake

Menace (This creature can't be blocked except by two or more creatures.)
Tunnel Snakes Rule! — Whenever Butch DeLoria attacks, it gets +1/+1 until end of turn for each other Rogue and/or Snake you control.
{1}{B}: Put a menace counter on another target creature. It becomes a Rogue in addition to its other types.

Arcane Signet

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

Amrou Kithkin

This creature can't be blocked by creatures with power 3 or greater.

Sol Ring

MacCready, Lamplight Mayor

Whenever a creature you control with power 2 or less attacks, it gains skulk until end of turn. (It can't be blocked by creatures with greater power.)
Whenever a creature with power 4 or greater attacks you, its controller loses 2 life and you gain 2 life.

Abyssal Gatekeeper

When this creature dies, each player sacrifices a creature of their choice.

Anafenza, Unyielding Lineage

Flash
First strike
Whenever another nontoken creature you control dies, Anafenza endures 2. (Put two +1/+1 counters on it or create a 2/2 white Spirit creature token.)

Abyssal Specter

Flying
Whenever this creature deals damage to a player, that player discards a card.

Acquisitions Expert

When this creature enters, target opponent reveals a number of cards from their hand equal to the number of creatures in your party. You choose one of those cards. That player discards that card. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.)