msem-instigator

{B}{G}, {T}: Reveal the bottom card of your library and exile it. Target creature gets +X/-X until end of turn, where X is that card's mana value.

Counter target spell unless its controller pays {1}.

Cards in graveyards lose all abilities.
Cards in graveyards can't be the target of spells or abilities.

Enchant creature
When Sylvan Majesty enters, search your library for a Forest card, put it onto the battlefield tapped, then shuffle.
Enchanted creature gets +3/+3.

Tap target creature, then draw X cards, where X is its mana value.

Flash
Flying
When Branu enters, return up to one other target creature you control to its owner's hand. If you do, create a token that's a copy of that creature, except it's 1/1.

This spell can't be countered.
Polis's Demise deals 5 damage to each creature. Destroy all artifacts.

Foretell {1}{B} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)
Create two X/X black Zombie creature tokens with menace, where X is the number of nontoken creatures that died under your control this turn.

Trample
As an additional cost to cast creature spells, you may sacrifice a permanent. If you do, that spell costs {2} less to cast and that creature enters with an additional +1/+1 counter on it.

{T}: Add {C}.
{4}, {T}, Sacrifice Elgaud Fortress: Create a token that's a copy of target artifact you control. Activate only as a sorcery.

Rouse 3. Untap target land. It gains flying and haste until end of turn if it's a creature. (Distribute three +1/+1 counters among permanents you control. If they aren't creatures, tap them and they become 0/0 creatures in addition to their other types.)

At the beginning of your end step, any number of target players mill three cards.
{5}{U/B}, {T}: You may cast target instant or sorcery card from an opponent's graveyard without paying its mana cost. Activate only as a sorcery.

Trample, haste
When Rejuvenating Elemental enters, remove up to X -1/-1 counters from among creatures you control. Rejuvenating Elemental gets +1/+1 until end of turn for each counter removed this way.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — Scry 2.
II — Draw two cards.
III — Spells you cast this turn cost {2} less to cast.

Lava Spill deals 2 damage to any target.
Look at the top three cards of your library. Put one on top and the rest on the bottom in any order.

Hexproof
Creatures you control get +1/+1 for each Aura attached to them.

Flying
{B/G}, Discard a creature card: Badru, the Skyshadow becomes a copy of the discarded card until end of turn, except he has flying and is 5/5.

(Transform this if it's not attached to a creature. Pay {1}{W} as a sorcery to unattach it.)
Enchant creature you control
Mount of Heroes's rider gets +2/+1.
Sacrifice Mount of Heroes: Counter target spell that targets you or Mount of Heroes's rider.

Flying
When Kaalia's Abomination enters or dies, it deals 2 damage to target opponent. Then that player discards two cards.

When Silvercrest Vanguard enters, scry 1, then draw a card.
Whenever you draw your second card each turn, put a +1/+1 counter on Silvercrest Vanguard.

Enchant creature
At the beginning of combat on your turn, create a token that's a copy of enchanted creature, except it has haste. Exile that token at the beginning of the next end step.

Exile target creature and all other creatures with the same name as that creature. Search its controller's graveyard, hand and library for any number of cards with the same name as that creature and exile them. Then that player shuffles. Exile Erase from Existence.

Target player mills seven cards. Then exile two cards from that player's graveyard.

Destroy target creature, enchantment, or planeswalker. Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

{2}{W}, Exile Worldwise Ascetic from your graveyard: Create a green Aura enchantment token named Years of Experience attached to target creature. The token has enchant creature and “Enchanted creature gets +2/+2.” Activate only as a sorcery.