msem-instigator

Enchant player
At the beginning of enchanted player's end step, if they cast a spell this turn, they lose 1 life.

When Goblin Arsonist dies, you may have it deal 1 damage to any target.

Haste
Encourage ({T}: Another target creature you control gets +1/+1 until end of turn. Encourage only as a sorcery.)

When Goblin Rocktosser enters, you may sacrifice a land. If you do, put a +1/+1 counter on Goblin Rocktosser.

First strike (This creature deals combat damage before creatures without first strike.)

Target creature gets +2/+2 until end of turn. You gain 2 life.

Gorru Recluse can't attack if you control a creature with greater power.

Whenever a creature you control enters for the first time each turn, create a 1/1 Scout creature token that's all colors.

Equipped creature has vigilance and can block an additional creature each combat.
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

When Grave Reaper enters, if it wasn't cast from your hand, it gets +1/+1 until end of turn.
Unearth {B} ({B}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the end step or if it would leave the battlefield. Unearth only as a sorcery.)

Haste
Whenever a player loses life, that player gains control of Graygulch Revenant.

Whenever you attack, put a hatching counter on Greatwyrm's Egg. Then you may sacrifice it. If you do, create a tapped and attacking X/X red Dragon creature token with flying and haste, where X is the number of hatching counters on Greatwyrm's Egg.

Green spells you cast with mana value 5 or greater cost {1} less to cast.
Whenever you cast a green spell with mana value 5 or greater, draw a card.

When Greenheart Squirrel enters, 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.

Whenever another Hound you control enters, put a +1/+1 counter on Greypelt Initiate.

This creature enters with a flying counter on it.
{2}{U}, Remove a counter from this creature: Search your library for a creature card with flying, reveal it, put it into your hand, then shuffle.

Flying, lifelink

{B}, {T}, Exile two cards from your graveyard: Create a 1/1 white Spirit creature token with flying.

Equipped creature gets +1/+0 and has wither. (It deals damage to creatures in the form of -1/-1 counters.)
Equip {2}

Enchant creature
Enchanted creature has experience. (Whenever it attacks, if it has fewer than three +1/+1 counters on it, put a +1/+1 counter on it.)

Target creature gets +2/+2 until end of turn.
Landfall — If you had a land you control enter this turn, that creature gets +4/+4 until end of turn instead.

You gain 3 life.
Draw a card.

Target permanent gains hexproof and indestructible until end of turn. Scry 1.

When Gusma's Artisan enters, search your library for a card, then shuffle and put that card on the bottom of it.
{2}{U}, Sacrifice Gusma's Artisan: Manifest the bottom card of your library. (To manifest a card, put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)