msem-instigator

Search your library for an enchantment card, reveal it, put it into your hand, then shuffle.

{U}{R}{W}, Discard a card named Sha'Iv, God of Order: Sha'Iv gains indestructible and becomes a God creature in addition to its other types.
Whenever Sha'Iv enters or attacks, choose target creature an opponent controls. Untap it, then tap each other creature that player controls. They don't untap during their controller's next untap step.

Counter target spell unless its controller pays {1} and 3 life.

Flying
Creatures you control have vigilance.
At the beginning of combat on your turn, you may tap target creature.
Morph {4}{W}

Enchant creature
When Strength in Imagining enters, if it enchants a face-down creature, put a +1/+1 counter on that creature.
Enchanted creature has flying and trample.

Trample
{3}{B}{G}, Discard two cards: Return Tammil and Sulei, the Guides and another target creature card from your graveyard to the battlefield tapped.

Choose target creature you control and target creature you don't control. Flip a coin. If the coin comes up heads, put one of those creatures on top of its owner's library. Otherwise, put both of them on top of their owners' libraries.

Erratic, erratic, erratic (When this creature dies, reveal the top four cards of your library. Put a creature card that costs less than this revealed this way onto the battlefield and the rest on the bottom of your library in any order. Repeat this process twice.)

At the beginning of your upkeep, each player mills two cards, then reveals the top card of their library and puts it on the bottom of their library.

This spell can't be countered.
If a spell or ability an opponent controls causes you to sacrifice Wellspring of Creation, you may put it on the top or bottom of its owner's library instead of putting it into that player's graveyard.

{T}: Add one mana of any color. If you spend this mana to cast a face-down creature spell, you gain 2 life.

Equipped creature gets +1/+1.
As long as equipped creature is multicolored, it gets an additional +1/+1.
Equip {1}

Each other colorless creature you control enters with an additional +1/+1 counter on it.

{X}, {T}, Sacrifice Chemical Grenade: Up to X target creatures each get -1/-1 until end of turn.

You may look at the top card of your library and face-down permanents you don't control.
{T}: Exile the top card of your library. If it's an Angel card or a card with morph, you may play that card this turn.

Equipped creature has base power and toughness 4/4, haste, and hexproof.
Equip {2}

{3}, {T}, Reveal a card at random from your hand: Draw a card.

Equipped creature gets +1/+1.
Whenever equipped creature becomes the target of a spell, you gain 3 life.
Equip {4}

Vigilance, haste
At the beginning of each player's upkeep, if that player has the lowest life total or is tied for the lowest life total, they gain control of Protector of the Innocent.

Equipped creature gets +2/+0 and can't block.
Equip {1}

Colorless creatures you control get +1/+1.

Altar of Adversity enters tapped.
{T}: Add {B}.
{T}: Add {R} or {W}. Altar of Adversity doesn't untap during your next untap step unless you control an Angel creature.

Altar of Chaos enters tapped.
{T}: Add {R}.
{T}: Add {G} or {U}. Altar of Chaos doesn't untap during your next untap step unless you control an Angel creature.

Altar of Creation enters tapped.
{T}: Add {U}.
{T}: Add {B} or {G}. Altar of Creation doesn't untap during your next untap step unless you control an Angel creature.

Altar of Destruction enters tapped.
{T}: Add {G}.
{T}: Add {W} or {B}. Altar of Destruction doesn't untap during your next untap step unless you control an Angel creature.