msem-instigator

Each player can't untap more than one nonbasic land during their untap step.

Haste
{4}{R}: Monstrosity 2. (If this creature isn't monstrous, put two +1/+1 counters on it and it becomes monstrous.)

Experience (Whenever this creature attacks, if it has fewer than three +1/+1 counters on it, put a +1/+1 counter on it.)
Whenever Primal Ruffian attacks, if it has a +1/+1 counter on it, other creatures you control get +1/+1 until end of turn. (If it had no counters on it when it attacked, this ability does not trigger.)

Whenever you cast a spell, you gain 1 life for each of its colors other than white.

{2}: Add one mana of any color.

Flash
When Prismatic Champion enters, create a white Aura enchantment token named Sunward attached to target creature. The token has enchant creature and “Enchanted creature has protection from creatures.”

Double strike
Concord — Pristine Duelist gets +2/+1 as long as there are four or more card types among permanents you control.

Flash
Flying
Prodigious Panya has base power and toughness 4/4 during extra turns.

When Project Head enters, investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)
{2}{U}, Exile Project Head: Shuffle your hand and graveyard into your library, then draw seven cards. Activate only if you control seven or more artifacts.

Once each turn, when an Aura is attached to Prop Custodian or you cast a spell that targets it, you may audition for white. (Create a 1/1 Construct Actor creature token, a Scout Role giving 2/3 and vigilance, or a Cleric Role giving 2/2 and lifelink. Roles replace older ones.)

When Prophet of Reclamation dies, mill three cards, then return up to one land card from your graveyard to your hand.

Haste
When Prophetic Flame dies, scry 1. (To scry 1, look at the top card of your library. You may put that card on the bottom of your library.)

Each other creature you control that's a Cleric or a Reflection gets +1/+1.
Protective Memory gets +3/+3 as long as you've gained life this turn.

Sacrifice Proud Lion: Counter target spell that targets you.
Ride {1}{W} ({1}{W}: Transform this and attach it to target creature you control without a Steed. Ride only as a sorcery.)

When this creature enters, create two 1/1 white Peasant creature tokens.
Whenever this creature attacks, you may pay {4}{G/W}. If you do, attacking Citizens and Peasants get +1/+1 until end of turn.

Trample
Resolute — {G}: Prowling Agamid gets +3/+3 until end of turn. Activate only once each turn and only if Prowling Agamid's power is greater than its base power.

Whenever you cast a noncreature spell, Prowling Frost-Tiger gets +1/+1 and gains hexproof until end of turn.

Whenever another Fox you control enters, Pup of a Marigold Burrow deals 1 damage to each opponent.

Haste
Whenever you cast an instant or sorcery spell, Pupil of Lightning gets +1/+1 until end of turn. If you cast that spell from your graveyard, put a +1/+1 counter on it instead.

Lifelink
{W}, {T}: Target creature gets +1/+1 and gains lifelink until end of turn. Activate only as a sorcery.

First strike, lifelink

Kicker {W} (You may pay an additional {W} as you cast this spell.)
When Purging Priestess enters, you may destroy target enchantment. If Purging Priestess was kicked, you gain life equal to that enchantment's mana value.

First strike
Purpose Elemental gets +1/+0 for each Aura attached to it.

Deathtouch
Putrid Lurker can't block.
Whenever you discard Putrid Lurker or another card, you may pay {B}. If you do, return Putrid Lurker from your graveyard to the battlefield.

Flash
When Pyramid Lord enters, copy target instant or sorcery spell. You may choose new targets for the copy.
Mirage {1}{R}{R} (You may cast this spell for its mirage cost. If you do, sacrifice it at the beginning of the next cleanup step.)