msem-instigator

Enchant creature
{R}: Enchanted creature gets +1/+0 until end of turn.
Ferocious — Whenever enchanted creature attacks, if you control a creature with power 4 or greater, enchanted creature gains double strike until end of turn.

Young Dragonheart gets +1/+0 and has first strike as long as you control a legendary creature.

Flash
Deathtouch

Invigorate X, where X is the number of creatures you control. (Choose a creature with the least power among creatures you control and put X +1/+1 counters on it.)

Look at the top four cards of your library. You may reveal a permanent card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Branch Prowler can't be blocked except by creatures with flying.

Exile target artifact or enchantment.

At the beginning of your upkeep, you may discard a land card. When you do, create a 2/2 green Wolf creature token.

{G}{G}: Create a 2/2 green Wolf creature token.
{1}{G}{G}: Create Shimaru, the White Wolf, a legendary 3/3 green Wolf creature token with hexproof.
{2}{G}{G}: Creatures you control get +2/+2 and gain trample until end of turn.

Destroy target creature with flying. If that creature had power 4 or greater, you gain 4 life.

Move any number of +1/+1 counters from creatures you control onto target creature you control, then that creature deals damage equal to its power to target creature you don't control.

Target creature you control gets +X/+X until end of turn, where X is the number of +1/+1 counters among creatures you control.

Trample
When Endangered Rhino dies, 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.”)

Landfall — Whenever a land enters the battlefield under your control, 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.”)

{3}{G}: Fallen Forest Wolf gets +2/+2 and gains trample until end of turn. Activate only once each turn.

Invigorate 2, then target creature you control fights target creature you don't control. (Choose a creature with the least power among creatures you control and put two +1/+1 counters on it.)

{G}, {T}: Add {C}{C}.

You may put a green creature card with mana value 4 or less from your hand onto the battlefield.
Ferocious — If you control a creature with power 4 or greater, that creature enters the battlefield with two +1/+1 counters on it.

Reach
Whenever another creature you control becomes the target of an instant or sorcery spell, that creature gets +3/+3 until end of turn.

Players play with the top card of their libraries revealed.
At the beginning of your precombat main phase, add {G}{G} for each land card among cards on top of libraries.
Jindao, the Coiled Prophet gets +2/+2 for each creature card among cards on top of libraries.

Juvenile Boa gets +2/+0 as long as you control a legendary creature.

Enchant Forest
When Kiss of the Dryad enters the battlefield, you gain 3 life and draw a card.
Enchanted land has “{T}: Add one mana of any color.”

Whenever you cast a creature spell, 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.”)
Whenever you sacrifice an Idol, draw a card.

When Leafmantle Dryad enters the battlefield, if you control a legendary creature, you may search your library for a basic land card and put it onto the battlefield tapped, then shuffle.

Trample
Whenever a land you control becomes tapped, Loamwrecker gets +1/+1 until end of turn.