msem-instigator

Precursor Sanctum enters tapped. When it does, look at the top three cards of your library, exile one face down, then put the rest on the bottom of your library in any order.
{T}: Add {C}.
{4}, {T}: You may play the exiled card without paying its mana cost. Activate only as a sorcery.

Ralora, Unforgiving Depths enters tapped.
Whenever a source deals damage to you, put a creation counter on Ralora.
{T}, Remove ten creation counters from Ralora and sacrifice it: It deals 10 damage to target player or planeswalker.

{T}, Pay 1 life: Add {W}.
{6}{W}{W}{W}, Exile Rius, Temple of the Grandfather from your hand: Target player gains 20 life.

{T}: Add {C}.
{2}, {T}: Put target Aura or Equipment card from your graveyard on top of your library.

Sea Of Skies Beyond enters tapped.
Whenever you cast a noncreature spell, put a creation counter on Sea Of Skies Beyond.
{T}, Remove ten creation counters from Sea Of Skies Beyond and sacrifice it: Shuffle your hand into your library, then draw five cards.

{T}, Pay 1 life: Add {G}.
{8}{G}, Exile Singers' Grove from your hand: Creatures you control get +7/+7 until end of turn.

Trample, haste
Skullbriar gets +1/+1 for each creature card in all graveyards.
{T}: Add {B} or {G}.
Skullbriar, Death's Mockery remains transformed as it moves to any zone other than a player's hand or library.

{T}: Add {C}.
{5}, {T}, Sacrifice The Aetherite Saloon: Each player discards their hand and draws seven cards.

{T}, Pay 1 life: Add {U}.
{4}{U}{U}{U}, Exile The Aurora's Heart from your hand: Target player draws seven cards.

{T}, Pay 1 life: Add {R}.
{6}{R}{R}, Exile The Court of Angels from your hand: Destroy all artifacts, creatures, and lands. They can't be regenerated.

Vanishing 5
The High Prairies enters tapped.
{T}: Add one mana of any color.

{T}: Add {C}.
{2}, {T}: Prevent all combat damage target creature would deal this turn.

The Last Sacred Gate enters tapped.
While you're searching your library, you may play The Last Sacred Gate from your library. (You may only do so during your turn and if you have a land play remaining.)
{T}: Add {C}.

{T}: Add {C}.
{2}, {T}: Choose a color, then choose one —
• Add one mana of that color for each token you control.
• Add one mana of that color for each permanent you control with one or more counters on it.

Tomb of the Roseblade enters tapped.
{T}: Add {C}.
{X}, {T}, Sacrifice Tomb of the Roseblade: Search your library for an Equipment card with mana value X or less, put it onto the battlefield, then shuffle. Activate only as a sorcery.

{T}: Add {C}.
{2}, {T}: Draw a card. Activate only if you have no cards in hand.

Wesgoth Cemetery enters tapped.
Whenever a nontoken creature dies, put a corpse counter on Wesgoth Cemetery.
{T}: Add {B} or {G}. If there are thirteen or more corpse counters on Wesgoth Cemetery, remove those counters, transform it, then untap it.
Wesgoth Cemetery can be your commander.

{T}: Add {C}.
{T}: Each opponent may draw a card. For each player who does, draw a card.

Archive 3 (As this enters, shuffle the top three cards of your main library into a new face up library. Sacrifice this after the archived library is empty.)
{T}: Add {C}.
{1}, {T}: Scry 1.