Ob Nixilis, the Ascended

Angel

Flying
When Ob Nixilis enters, destroy all tapped creatures your opponents control. You gain 1 life for each creature destroyed this way.
At the beginning of each end step, if you gained life this turn, create a 4/4 white Angel creature token with flying.

Despark

Exile target permanent with mana value 4 or greater.

Whirlwind of Thought

Whenever you cast a noncreature spell, draw a card.

Goblin

Windcrag Siege

As this enchantment enters, choose Mardu or Jeskai.
• Mardu — If a creature attacking causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.
• Jeskai — At the beginning of your upkeep, create a 1/1 red Goblin creature token. It gains lifelink and haste until end of turn.

Azorius Signet

Chromatic Lantern

Lands you control have "{T}: Add one mana of any color."
{T}: Add one mana of any color.

Treasure

Currency Converter

Rogue

Whenever you discard a card, you may exile that card from your graveyard.
{2}, {T}: Draw a card, then discard a card.
{T}: Put a card exiled with this artifact into its owner's graveyard. If it's a land card, create a Treasure token. If it's a nonland card, create a 2/2 black Rogue creature token.

Dimir Signet

Fellwar Stone

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

Izzet Signet

Proteus Staff

{2}{U}, {T}: Put target creature on the bottom of its owner's library. That creature's controller reveals cards from the top of their library until they reveal a creature card. The player puts that card onto the battlefield and the rest on the bottom of their library in any order. Activate only as a sorcery.

Teferi's Reproach

Choose target opponent. Until that player's next turn, they gain protection from everything and their life total can't change. All nonland permanents they control phase out. (While they're phased out, they're treated as though they don't exist. They phase in before that player untaps during their next untap step.)
Exile Teferi's Reproach.

Rakdos Signet

Talisman of Creativity

{T}: Add {C}.
{T}: Add {U} or {R}. This artifact deals 1 damage to you.

Talisman of Dominance

{T}: Add {C}.
{T}: Add {U} or {B}. This artifact deals 1 damage to you.

Talisman of Indulgence

{T}: Add {C}.
{T}: Add {B} or {R}. This artifact deals 1 damage to you.

Reality Fracture Commander