msem-instigator

{W}: Target creature gains vigilance until end of turn.

{1}, {T}: End the turn. Activate only during your turn.

Flying
As long as it's your turn, creatures you control get +3/+0 and have vigilance.
As long as it's not your turn, creatures you control get +0/+3 and have lifelink.

As Sunflower Fields enters the battlefield, you may pay 3 life. If you don't, it enters the battlefield tapped.
{T}: Add {R}, {G}, or {W}.

Sunken Cavern enters the battlefield tapped unless another player controls a land that could produce {U} or {R}.
{T}: Add {U} or {R}.

Heretic (Whenever you cast a spell that doesn't share a color with this creature, it gets +1/+1 until end of turn.)
{1}{W}: You gain life equal to Sunken Outcast's power.

Primal {1}{W}{W} (During your turn, you may cast this spell for {1}{W}{W} instead of playing a land.)
Double strike
When Sunken Slasher enters the battlefield, if you didn't play a land this turn, put a +1/+1 counter on it.

Lifelink
When Sunlight Dancer enters the battlefield, target opponent gains 4 life.

Haste
Heretic (Whenever you cast a spell that doesn't share a color with this creature, it gets +1/+1 until end of turn.)

Sunny Dunes enters the battlefield tapped unless another player controls a land that could produce {R} or {W}.
{T}: Add {R} or {W}.

Sunrise Bluffs enters the battlefield tapped.
{T}: Add {R}.
You may untap Sunrise Bluffs during each other player's untap step. Whenever you do, you lose 1 life.

Sunrise Prairie enters the battlefield tapped.
{T}: Add {W}.
You may untap Sunrise Prairie during each other player's untap step. Whenever you do, you lose 1 life.

Sunrise River enters the battlefield tapped.
{T}: Add {U}.
You may untap Sunrise River during each other player's untap step. Whenever you do, you lose 1 life.

Sunrise Ruins enters the battlefield tapped.
{T}: Add {B}.
You may untap Sunrise Ruins during each other player's untap step. Whenever you do, you lose 1 life.

Sunrise Woods enters the battlefield tapped.
{T}: Add {G}.
You may untap Sunrise Woods during each other player's untap step. Whenever you do, you lose 1 life.

Sunset Cliffs Hunter gets +1/+0 and has first strike as long as a player controls a permanent with a bounty counter on it.

When Sunset Cliffs Lawman enters the battlefield, you may post a bounty on target creature. (Put a bounty counter on that creature. It has “When this creature dies, each opponent draws a card” as long as it has a bounty counter on it.)

When Sunset Cliffs Patron enters the battlefield, you may post a bounty on target creature. (Put a bounty counter on that creature. It has “When this creature dies, each opponent draws a card” as long as it has a bounty counter on it.)

Flash
Flying
When Sunset Herald enters the battlefield, if it was cast, return to the battlefield all creature cards from your graveyard that were put there from the battlefield this turn.

({T}: Add {W}.)
Sunstage enters the battlefield tapped.
When Sunstage enters the battlefield, creatures you control get +0/+1 until end of turn.

Sunwing has flying as long as it's your turn.

Creatures you control get +2/+2 and gain trample until end of turn. If you cast this spell from exile, creatures you control get an additional +2/+2 until end of turn.
Prophecy {2}{G}{G} (Once each turn, you may exile a card with prophecy as you reveal it. When you do, you may cast it for its prophecy cost as long as it's exiled.)

Whenever a creature you control becomes the target of a spell, that creature gets +3/+3 until end of turn.

Primal {1}{G}{G} (During your turn, you may cast this spell for {1}{G}{G} instead of playing a land.)
When Swampedge Sentinel dies, return another creature card from your graveyard to your hand.