msem-instigator

Trample
Gloamrazer Hydra enters with four +1/+1 counters on it.
Whenever a nontoken creature you control dies, if it was embattled, create an X/X green Hydra creature token, where X is that creature's power. (A creature is embattled if it has a counter on it or has a permanent you control attached to it.)

When Globule of Vigor enters or leaves the battlefield, up to one target creature gets +1/+1 until end of turn.
{2/G}, {T}, Sacrifice Globule of Vigor: Draw a card.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
{3}{G}: Gloomhollow Woodlurker must be blocked this turn if able.

When Glowskate Channeler enters, create a green Aura enchantment token named Manta's Wings attached to target creature. The token has enchant creature and “Enchanted creature gets +2/+2.”

Whenever you cycle a card, reveal the top two cards of your library. You may put a permanent card from among them into your hand. Put the rest on top of your library in any order or into your graveyard.
Cycling {2} ({2}, Discard this card: Draw a card.)

Flash
As an additional cost to cast this spell, sacrifice a creature or pay {2}.
Defender

You gain 3 life. Whenever one or more creatures enter this turn, repeat that process.

When Godseeker Vanguard enters, create two 1/1 green Scout creature tokens.

When Gold Farmer enters, create a Treasure token.

When Golden Grizzly enters, 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.”)

Spells you cast with mana value 4 or greater cost {1} less to cast.

Trample
Whenever a creature you control leaves the battlefield, if it had counters on it, put those counters on Golna's Heart.

When Golna, the First Shah enters, create Shir, a legendary 3/3 white Cat creature token with trample.
Monument {5}{G}{G} (You may cast this transformed from your graveyard for its monument cost. Exile it if it would leave the battlefield or not resolve.)

Target creature gets +2/+2 until end of turn. Whenever that creature deals combat damage to a player or planeswalker this turn, draw that many cards.

Harvest (You may tap any number of creatures you control as you cast this spell. If you do, reduce this spell's mana cost by their total power.)
Target creature you control deals damage equal to its power to target creature you don't control.

Motivate 2 (When this creature enters, you may motivate target creature with less power than this by putting two +1/+1 counters on it.)
Each creature you control with a +1/+1 counter on it has trample.

Target creature you control and each other creature in its pack deal damage equal to their power to target creature or planeswalker. (Two or more creatures you control with equal power are in a pack.)

Flash (You may cast this spell any time you could cast an instant.)
When Gorillas in the Mist enters, prevent all combat damage that other creatures would deal this turn.

Other Dryad creatures you control get +1/+1 and have hexproof.

Enchant land
When Grace of Timber enters, put a +1/+1 counter on target creature you control.
Enchanted land has “{T}: Add two mana of different colors.”

Vigilance
Whenever the final chapter ability of a Saga you control resolves, you may return a non-Saga card at random from your graveyard to your hand.

You may pay {1}{G} and tap an untapped Scout you control rather than pay this spell's mana cost.
Reveal the top four cards of your library. You may put a land card from among them onto the battlefield tapped. You may put a creature card from among them into your hand. Put the rest on the top and/or bottom of your library in any order.

Whenever a creature enters, it fights another target creature of its controller's choice.

Mill three cards, then you may return a creature or land card from your graveyard to your hand. (To mill three cards, put the top three cards of your library into your graveyard.)

This spell costs {1} less to cast for each counter on permanents you control.
Trample
{G}{G}, Remove ten counters from among permanents you control, Exile Grasp of the Stageless from your graveyard: Create a token that's a copy of Grasp of the Stageless. Activate only as a sorcery.