Sol Ring

On Wings of Gold

Creatures you control that are Zombies and/or tokens get +1/+1 and have flying.
Whenever one or more cards leave your graveyard, create a 1/1 white Zombie creature token.

Island

Arcane Sanctum

This land enters tapped.
{T}: Add {W}, {U}, or {B}.

Escape Protocol

Whenever you cycle a card, you may pay {1}. When you do, exile target artifact or creature you control, then return it to the battlefield under its owner's control.

Command Tower

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

Exotic Orchard

{T}: Add one mana of any color that a land an opponent controls could produce.

Zombie Infestation

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

Swamp

Dying to Serve

Whenever you discard one or more cards, create a tapped 2/2 black Zombie creature token. This ability triggers only once each turn.

Toluz, Clever Conductor

When Toluz enters, it connives. (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on this creature.)
Whenever you discard one or more cards, exile them from your graveyard.
When Toluz dies, put the cards exiled with it into their owner's hand.