msem-instigator

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

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

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

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

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

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

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.)

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

When Saia's Protege enters the battlefield, 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.

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

When Sandbluff Barflies enters the battlefield, you gain 2 life.

When Sandbluff Confiscator enters the battlefield, 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 the battlefield, 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 enters the battlefield under your control, you may untap Sandbluff Irregular.

{R}, {T}: Sandbluff Slinger deals 1 damage to any target.
Quickdraw {1}{R} (When a creature you control blocks or becomes blocked, you may cast this spell for {1}{R}.)

Creatures you control get +1/+1 until end of turn. Soldiers you control also gain first strike until end of turn.

Shimmer (Whenever this creature attacks, create a tapped and attacking token that's a copy of it. Exile the token at the beginning of the end step.)
When Sandstrider enters the battlefield, put a +1/+1 counter on target creature.

Whenever you gain life, target opponent loses that much life.

{B}, Pay 1 life: Target creature's controller sacrifices it unless that player pays 1 life.
{B}, Sacrifice a creature: You gain life equal to the sacrificed creature's power.

At the beginning of your upkeep, you gain 1 life for each color among permanents you control.
{W}{U}{B}{R}{G}, Sacrifice Sartha's Studies: Double your life total.