msem-instigator

({T}: Add {G} or {U}.)
As Ruptured Grove enters, you may pay {1}. If you don't, Ruptured Grove enters tapped.

({T}: Add {G} or {W}.)
As Ruptured Meadow enters, you may pay {1}. If you don't, Ruptured Meadow enters tapped.

({T}: Add {B} or {G}.)
As Ruptured Morass enters, you may pay {1}. If you don't, Ruptured Morass enters tapped.

({T}: Add {W} or {U}.)
As Ruptured Square enters, you may pay {1}. If you don't, Ruptured Square enters tapped.

({T}: Add {R} or {G}.)
As Ruptured Trail enters, you may pay {1}. If you don't, Ruptured Trail enters tapped.

Rushing Waters enters tapped.
{T}: Add {U} or {R}.
When Rushing Waters enters, you may put a loyalty counter on a planeswalker you control.

Whenever Rustshell Mantis is dealt damage, put that many +1/+1 counters on it. (It must survive the damage to get the counters.)

Deathtouch
Whenever Ruststep Centipede deals combat damage to a player, you may destroy target artifact or enchantment that player controls.

Whenever another creature with power 4 or greater you control attacks, Ruthless Brawler deals 1 damage to defending player.

If a player taps a nonbasic land for mana, that land produces {C} instead of any other type.
Whenever Rylei Wakebreaker attacks, it and another target creature you control each get +1/+0 until end of turn for each attacking creature you control.

Whenever your team sacrifices a creature, each opponent loses 1 life and you gain that much life.

Target creature gains indestructible until end of turn.
Fuse (You may cast one or both halves of this card from your hand.)

Return target creature or land card from your graveyard to your hand. You may shuffle up to three cards from your graveyard into your library.

Prevent all combat damage that would be dealt this turn. Target player sacrifices an attacking creature.

When Saia's Protege enters, gain control of target artifact or enchantment for as long as you control Saia's Protege.

[+1]: Untap up to two target permanents. They gain hexproof until your next turn.
[–2]: Tap up to three target permanents. They don't untap during their controller's next untap step.
[–6]: Exile up to five target permanents. Return those cards to the battlefield under your control.

Enchant creature
Enchanted creature has vigilance.
Whenever enchanted creature attacks or blocks, you gain 2 life.

[+2]: Draw a card, then discard a card unless you pay {2}.
[+1]: Target creature gets +1/+1 and gains lifelink until your next turn.
[–1]: Tap target permanent. It doesn't untap during its controller's next untap step.
[–2]: Return target artifact, enchantment, or tapped creature to its owner's hand.

When Sandbluff Assailant enters, it deals 1 damage to target player or planeswalker.

When Sandbluff Barflies enters, you gain 2 life.

When Sandbluff Confiscator enters, you may tap or untap target artifact or creature.

First strike
Spells you cast during combat cost {1} less to cast.

When Sandbluff Enforcers enters, detain target creature an opponent controls. (Until your next turn, that creature can't attack or block and its activated abilities can't be activated.)

Whenever Sandbluff Inciter attacks, it deals damage to defending player equal to the number of tapped creatures you control.

Whenever a Soldier you control enters, you may untap Sandbluff Irregular.