msem-instigator

Enchant creature
Enchanted creature has first strike and trample.

Arm target creature you control. It deals damage equal to its power to any target. (Create a colorless Equipment artifact token with “Equipped creature gets +1/+0” and equip {2}, then attach it to that creature.)

Exchange control of all creatures you and target player control until end of turn. Untap those creatures. They gain haste until end of turn.

Target opponent sacrifices half the permanents they control, rounded down.

Menace
Whenever a player gains life, that player sacrifices a permanent.

Wake of the Beast deals 2 damage divided as you choose among one or two targets.
Whenever a creature you control becomes monstrous, you may pay {R}. If you do, return Wake of the Beast from your graveyard to your hand.

Target attacking creature gains double strike until end of turn. Arm it. (Create a colorless Equipment artifact token with “Equipped creature gets +1/+0” and equip {2}, then attach it to that creature.)

Flying, haste
Whenever Warfury Dragon becomes enchanted or equipped, monstrosity 2. (If this creature isn't monstrous, put two +1/+1 counters on it and it becomes monstrous.)

Create three 2/2 green Wolf creature tokens.

Vigilance
{4}{G}{G}, {T}: Other creatures you control get +2/+2 until end of turn.

Enchant creature
Enchanted creature has base power and toughness 8/8.

Enchant creature
Enchanted creature gets +1/+1.
Sacrifice Bear Necessities: Enchanted creature gains indestructible until end of turn.

Target creature you control gains indestructible until end of turn if it's embattled. Then it fights target creature you don't control. (A creature is embattled if it has a counter on it or has a permanent you control attached to it.)

When a creature you control becomes the target of a spell or ability an opponent controls, sacrifice Bestial Harmony. If you do, draw three cards.

Bjarndyr Bruiser gets +2/+2 as long as it's embattled. (A creature is embattled if it has a counter on it or has a permanent you control attached to it.)

Trample
Other Bears you control get +2/+2.

Target creature you control gets +2/+2 and gains hexproof until end of turn.

Look at the top four cards of your library. You may reveal a land card from among them and put it into your hand. Put the rest on the bottom of your library in any order.
Dominance — You may reveal a creature card from among them instead if you control the creature with the greatest power or tied for the greatest power.

Target creature gets +5/+5 until end of turn.
Fabled {4}{G} (Then if you cast this for its fabled cost, put it onto the battlefield transformed attached to that creature.)

Enchant creature
Enchanted creature must be blocked if able.

You may put a permanent card from your hand onto the battlefield. Then each opponent may put a permanent card from their hand onto the battlefield. If one does, you may repeat this process.

{7}{G}: Monstrosity 6. (If this creature isn't monstrous, put six +1/+1 counters on it and it becomes monstrous.)

When Greenheart Squirrel enters the battlefield, look at the top four cards of your library. You may reveal a basic land card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

{4}{G}{G}: Monstrosity 4. (If this creature isn't monstrous, put four +1/+1 counters on it and it becomes monstrous.)
When Grizzly Matriarch becomes monstrous, destroy target noncreature permanent an opponent controls.

{T}: Add {G}.
Dominance — {T}: Add {G}{G}. Activate only if you control the creature with the greatest power or tied for the greatest power.