msem-instigator

Prevent all combat damage that would be dealt this turn by non-Army creatures.
Amass Soldiers 2. (Put two +1/+1 counters on an Army you control. It's also a Soldier. If you don't control one, create an 0/0 black Soldier Army creature token first.)

Equipped creature gets +5/+5.
Whenever equipped creature becomes blocked, destroy all other creatures.
Equip {5}

Whenever you draw a card, put a dream counter on Stargazing.
Remove seven dream counters from Stargazing and exile it: Shuffle your hand and graveyard into your library, then draw seven cards.

You gain 4 life. Then if {R} was spent to cast Starglare, it deals 4 damage to up to one target creature.

Reveal the top five cards of your library. An opponent separates those cards into two piles. Put one pile into your hand. You may cast a nonland card with mana value 3 or less from the other pile without paying its mana cost, then put that pile into your graveyard.

{T}: Add {C}.
{T}, Pay 1 life: Add {G}.
{G}, {T}: Add one mana of any color.

{T}: Add {C}.
{T}, Pay 1 life: Add {B}.
{B}, {T}: Add one mana of any color.

{T}: Add {C}.
{T}, Pay 1 life: Add {W}.
{W}, {T}: Add one mana of any color.

{T}: Add {C}.
{T}, Pay 1 life: Add {U}.
{U}, {T}: Add one mana of any color.

{T}: Add {C}.
{T}, Pay 1 life: Add {R}.
{R}, {T}: Add one mana of any color.

{T}: Add {C}.
{3}, {T}: Aetherize target permanent you control. Activate only as a sorcery. (To aetherize, create a token that's a copy of it, then exile that token.)

Flash
Enchant creature
Enchanted creature gets +1/+1 for each enchantment you control.

Nonbasic lands target player controls don't untap during that player's next untap step.
Fabled {3}{R} (Then if you cast this for its fabled cost, put it onto the battlefield transformed attached to that player.)

Draw two cards. If you have no cards in hand and there are no cards in your graveyard, draw seven cards instead.

Exile target nonland permanent. As long as it remains exiled, its owner may return it to the battlefield any time they could cast an instant. If you control that permanent, you may activate its loyalty abilities any time you could cast an instant during that turn.

Augmented — If you've spent {W}{U}{B}{R}{G} to cast spells this turn, you may play Start Over without paying its mana cost.
Put target creature or planeswalker on the bottom of its owner's library.

You may discard a card. If you do, draw two cards.
Type leitmotif (If you cast this spell from your hand, exile it as it resolves. When you cast your next spell that shares a type with this card, you may cast this from exile without paying its mana cost.)

Each player chooses up to half the creatures they control, then sacrifices the rest.

{T}: Add {C}.
{2}, Pay 2 life: Starved Oasis becomes a 4/2 Elemental creature until end of turn. It's still a land.

You may exile cards you own as you reveal them. (You see the card before you exile it.)
During each of your turns, you may cast a card exiled with Starwing Nebula.

Flash (You may cast this spell any time you could cast an instant.)
When Stasis Snare enters, exile target creature an opponent controls until Stasis Snare leaves the battlefield.

Choose one —
• Destroy target artifact or land.
• State Collapse deals damage equal to the number of artifacts you control to any target.

This spell costs {2} less to cast if you cast it during your main phase.
Tap up to two target creatures. Put a stun counter on each of those creatures.

{T}: Add {C}.
{3}, {T}: Create an Idol token. (It's an artifact with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)

Until end of turn, if a source you don't control would deal damage to you or cause you to lose life, mill that many cards instead.