Reliquary Tower

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

Zombie Infestation

Discard two cards: Create a 2/2 black Zombie creature token.

Contested War Zone

Whenever a creature deals combat damage to you, that creature's controller gains control of Contested War Zone.
{T}: Add {C}.
{1}, {T}: Attacking creatures get +1/+0 until end of turn.

Swamp

Treasure Hunt

Reveal cards from the top of your library until you reveal a nonland card, then put all cards revealed this way into your hand.