msem-instigator

Whenever Patron of Asham attacks, tap target creature an opponent controls with power less than or equal to your fealty to Plains. (Each Plains you control counts towards your fealty to Plains.)

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

This spell costs {2} less to cast and may be cast as though it had flash if an opponent searched their library this turn.
When Ridge Warden enters, exile another target nonland permanent with mana value 4 or less until Ridge Warden leaves the battlefield.

When Roving Chaplains enters, create two 1/1 white Spirit creature tokens with flying.
{W}, Tap another untapped creature you control: Tap target nonland permanent an opponent controls.

Vigilance
Chosen one ({W}{U}{B}{R}{G}: Transform this permanent.)

Flying, vigilance

Flash
Flying
When Sandstreamer enters, target permanent gains indestructible until end of turn.

Target creature you control gets +1/+2 until end of turn. If that creature is white, create a white Aura enchantment token with enchant creature and “Enchanted creature has first strike” attached to that creature.

Flying
When Seraph of Renewal leaves the battlefield, you may return target permanent card with mana value 3 or less from your graveyard to the battlefield.

[+1]: Create a 1/1 white Warrior creature token with lifelink. You gain 1 life.
[–2]: Put two +1/+1 counters on target creature. It gains double strike until end of turn.
[–7]: Choose up to three creatures, then destroy the rest.

When Shawlbinder enters, if you control a Desert, exile another target permanent. Return that card to the battlefield under its owner's control at the beginning of the next end step.

Survivors you control have flying.

Flying, vigilance

Flash (You may cast this spell any time you could cast an instant.)
When Stasis Snare enters, exile target creature an opponent controls until Stasis Snare leaves the battlefield.

When Suraj Militant enters, target creature gets +1/+1 until end of turn.

Enchant creature
Enchanted creature gets +2/+2.
At the beginning of combat on your turn, enchanted creature gains your choice of flying, vigilance, or lifelink until end of turn.

Counter target spell. Draw a card, then discard a card.

At the beginning of your upkeep, if the number of permanents you control, the number of cards in your hand, and the number of cards in your graveyard are all equal, you win the game.

Flying
Chosen one ({W}{U}{B}{R}{G}: Transform this permanent.)

Flying
{1}: Archon of Supremacy gets +1/-1 until end of turn.

Whenever Bazaar Informant deals combat damage to a player, reveal the top card of that player's library. If it's a nonland card, put a +1/+1 counter on Bazaar Informant, then that player puts that card into their graveyard.

Whenever Canyon Mystic deals combat damage to a player, draw a card.

Flash (You may cast this spell any time you could cast an instant.)
Flying
Tapped creatures you control have hexproof.

Draw three cards, then discard a card.

This spell costs {1} less to cast for each Desert you control.
When Crested Crustacean enters, return target permanent to its owner's hand.