msem-instigator

Wildfire Elemental has frenzy 4 as long as you control no other creatures. (Whenever this creature attacks and isn't blocked, it gets +4/+0 until end of turn.)
Wildfire Elemental has frenzy 4 as long as you have no cards in hand.

Lifelink
{2}, Remove two counters from Acrimony: Each opponent loses 2 life and you gain 2 life.
At the beginning of your end step, for each permanent, move a counter from that permanent onto Acrimony.

Return target card from your graveyard to your hand.

At the beginning of your upkeep, each player sacrifices a nonbasic land.

Stampede — Whenever Cloud's Roar Avenger and a creature with greater power attack, tap up to one target creature.

Search your library for a card, put that card into your hand, then shuffle. If you control two or more creatures with -1/-1 counters on them, add {B}{B}{B}.
Agonize (You may cast this card from your graveyard by putting a -1/-1 counter on a creature you control in addition to paying its other costs. Then exile this card.)

Whenever equipped creature attacks, put a progress counter on Astrina, Tempered by Glory.
Equip {1}
[PROGRESS 1-2] Equipped creature gets +1/+1 and has first strike.
[PROGRESS 3+] Equipped creature gets +4/+4 and has first strike and lifelink.

Gain control of target creature with power less than or equal to the number of different creature types among creatures you control.

If it isn't an extra turn, take an extra turn after this one. (Cast a copy of this spell once while this creature is on the battlefield.)

Haste
Each creature with toughness greater than its power can't block.

For each color of mana spent to cast this spell, create a 0/2 green Egg creature token. (Then exile this card. You may cast the creature later from exile.)

Flying
Starbane Elemental's power and toughness are each equal to the number of creatures with flying you control.
When Starbane Elemental enters, destroy all creatures without flying.

Draw X cards, where X is the number of differently named lands you control.

Creatures you control gain double strike until end of turn. Whenever a creature you control deals combat damage this turn, put a +1/+1 counter on it.

As an additional cost to cast this spell, discard a card.
Draw two cards. Add one mana of any color.

Flying
When Sage of Storms enters, untap another target creature you control with flying and put a +1/+1 counter on it.

Attacking creatures you control have first strike.
Whenever three or more creatures you control die, Glorysinger deals 4 damage to any target.

Advance {1}{R} (Cast this for {1}{R} to advance it as it enters. {1}{R}: Advance this as a sorcery.)
Whenever Blitz Breaker advances, its power becomes equal to the amount of noncombat damage that's been dealt to your opponents this turn. (This effect lasts indefinitely.)

Counter target spell unless its controller pays {1}. If you control an artifact, instead counter that spell unless its controller pays {4}.

When Blessed Spellroot dies, you gain 5 life.

Crumbling Aqueduct enters tapped unless you control another Desert.
{T}: Add {U} or {B}.

Flying, haste
When Crimson Hellmaw enters, it deals 3 damage to any target.
Revive {5}{R}{R} ({5}{R}{R}, Exile this card from your graveyard: Create a token that's a copy of it except it has no mana cost. Revive only as a sorcery.)

Search your library for an enchantment card, reveal it, put it into your hand, then shuffle.

Echoing Thunder deals 3 damage to target creature and all other creatures with the same name as that creature.