Reliquary Tower

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

Barren Moor

Barren Moor enters tapped.
{T}: Add {B}.
Cycling {B} ({B}, Discard this card: Draw a card.)

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

Lonely Sandbar enters tapped.
{T}: Add {U}.
Cycling {U} ({U}, Discard this card: Draw a card.)

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