msem-instigator

Equipped creature has vigilance.
Equipped creature gets +3/+3 as long as you control a Spirit.
Equip {1}

Create two tapped colorless land tokens named Far-Off Lands with “{T}: Add one mana of any color.”

Whenever Burning Hart deals combat damage to a player, it deals that much damage to up to one target planeswalker that player controls.

{T}, Tap two other untapped creatures you control: Add two mana of any one color.

Double strike

When Drop Bear enters the battlefield, return another target permanent that isn't a land an opponent controls or a card in a graveyard to its owner's hand.

Create two 1/1 green Frog creature tokens. (Then exile this card. You may cast the creature later from exile.)

Forest Fire deals 4 damage to target creature or planeswalker. (Then exile this card. You may cast the creature later from exile.)

Up to two target lands you control become 1/1 black Bear creatures with deathtouch. They're still lands.

Add two mana in any combination of colors. (Then exile this card. You may cast the creature later from exile.)

Whenever you cast an instant, sorcery, or Wizard spell, Leafdown Sizzlemage gets +1/+0 until end of turn.

When Little Pig enters the battlefield, if you control a land named Far-Off Lands, put two +1/+1 counters on it.

Search your library for an Equipment card, reveal it, put it into your hand, then shuffle. (Then exile this card. You may cast the creature later from exile.)

Counter target enchantment, instant, or sorcery spell. (Then exile this card. You may cast the creature later from exile.)

Choose highest or lowest. Target opponent reveals their hand and discards a card with the chosen kind of mana value among the revealed nonland cards.

Whenever Shifty Fink attacks, if you have more cards in hand than defending player, it gets +2/+1 until end of turn.

Ward {2}
Slippery Bunyip can't be blocked except by creatures with Adventures.

Target opponent discards two cards. You gain 2 life. (Then exile this card. You may cast the creature later from exile.)

Create a 1/1 white Spirit creature token with flying. (Then exile this card. You may cast the artifact later from exile.)

As long as an opponent has one or fewer cards in hand, Valdez gets +2/+0 and has menace.