Sanctum of Ugin
Add to your mana pool.
Whenever you cast a colorless spell with converted mana cost 7 or greater, you may sacrifice Sanctum of Ugin. If you do, search your library for a colorless creature card, reveal it, put it into your hand, then shuffle your library.
$ 000
Salvaging Station
Casting Cost:
: Return target noncreature artifact card with converted mana cost or less from your graveyard to play.
Whenever a creature is put into a graveyard from play, you may untap Salvaging Station.
Sakura-Tribe Elder
Sacrifice Sakura-Tribe Elder: Search your library for a basic land card, put that card into play tapped, then shuffle your library.
Sakiko, Mother of Summer
Whenever a creature you control deals combat damage to a player, add that much to your mana pool. Until end of turn, this mana doesn't empty from your mana pool as steps and phases end.
Sakashima's Student
Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
You may have Sakashima's Student enter the battlefield as a copy of any creature on the battlefield, except it's a Ninja in addition to its other creature types.
Sakashima the Impostor
You may have Sakashima the Impostor enter the battlefield as a copy of any creature on the battlefield, except its name is still Sakashima the Impostor, it's legendary in addition to its other types, and it gains ": Return Sakashima the Impostor to its owner's hand at the beginning of the next end step."
Saheeli Rai
+1: Scry 1. Saheeli Rai deals 1 damage to each opponent.
-2: Create a token that's a copy of target artifact or creature you control, except it's an artifact in addition to its other types. That token gains haste. Exile it at the beginning of the next end step.
-7: Search your library for up to three artifact cards with different names, put them onto the battlefield, then shuffle your library.
Sage of Hours
Heroic — Whenever you cast a spell that targets Sage of Hours, put a +1/+1 counter on it.
Remove all +1/+1 counters from Sage of Hours: For each five counters removed this way, take an extra turn after this one.
Saffi Eriksdotter
Sacrifice Saffi Eriksdotter: When target creature is put into your graveyard from the battlefield this turn, return that card to the battlefield.
Sadistic Hypnotist
Sacrifice a creature: Target player discards two cards from his or her hand. Play this ability only any time you could play a sorcery.
Sacrifice a creature: Target player discards two cards. Activate this ability only any time you could cast a sorcery.
Sacrifice
As an additional cost to cast Sacrifice, sacrifice a creature.
Add to your mana pool an amount of equal to the sacrificed creature's converted mana cost.
Sacred Ground
Whenever a spell or ability an opponent controls causes a land to be put into your graveyard from the battlefield, return that card to the battlefield.
Sacred Foundry
(: Add or to your mana pool.)
As Sacred Foundry enters the battlefield, you may pay 2 life. If you don't, Sacred Foundry enters the battlefield tapped.