When Sadistic Augermage dies, each player puts a card from their hand on top of their library.

Menace

At the beginning of your end step, if you have the initiative, create a Treasure token. Create three of those tokens instead if you've completed a dungeon.

Choose a Background (You can have a Background as a second commander.)

Sage of Ancient Lore's power and toughness are each equal to the number of cards in your hand.

When Sage of Ancient Lore enters the battlefield, draw a card.

At the beginning of each upkeep, if no spells were cast last turn, transform Sage of Ancient Lore.

When Sage of Epityr enters the battlefield, look at the top four cards of your library, then put them back in any order.

, Sacrifice an artifact: Draw a card.

, : Create a token that's a copy of another target creature or artifact you control, except it's an artifact in addition to its other types. It gains haste. Sacrifice it at the beginning of the next end step.

Flash

This spell costs less to cast if there are no instant or sorcery cards in your hand.

When Saiba Syphoner enters the battlefield, return target instant or sorcery card from your graveyard to your hand.

If Saiba Syphoner would die, shuffle it into your library instead.

When Sailor of Means enters the battlefield, create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

You may have Sakashima of a Thousand Faces enter the battlefield as a copy of another creature you control, except it has Sakashima of a Thousand Faces's other abilities.

The "legend rule" doesn't apply to permanents you control.

Partner (You can have two commanders if both have partner.)

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.

Outlast (, : Put a +1/+1 counter on this creature. Outlast only as a sorcery.)

: Target creature gets -2/-0 until end of turn.

Salvage Slasher gets +1/+0 for each artifact card in your graveyard.

: Prevent the next 1 damage that would be dealt to any target this turn.

: Samite Archer deals 1 damage to any target.

: Creatures you control gain protection from the colors of target permanent you control until end of turn.

Whenever Samite Herbalist becomes tapped, you gain 1 life and scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Bushido 2 (Whenever this creature blocks or becomes blocked, it gets +2/+2 until end of turn.)

Flash

Double strike, vigilance, haste

Other creatures you control have haste.

, : Untap another target creature.

Whenever another creature enters the battlefield under your control, Sanctifier of Souls gets +1/+1 until end of turn.

, Exile a creature card from your graveyard: Create a 1/1 white Spirit creature token with flying.

Sacrifice Sanctum Guardian: The next time a source of your choice would deal damage to any target this turn, prevent that damage.

When Sand Scout enters the battlefield, if an opponent controls more lands than you, search your library for a Desert card, put it onto the battlefield tapped, then shuffle.

Whenever one or more land cards are put into your graveyard from anywhere, create a 1/1 red, green, and white Sand Warrior creature token. This ability triggers only once each turn.

When Sandsteppe Outcast enters the battlefield, choose one —

• Put a +1/+1 counter on Sandsteppe Outcast.

• Create a 1/1 white Spirit creature token with flying.

First strike (This creature deals combat damage before creatures without first strike.)

: Sandstone Warrior gets +1/+0 until end of turn.

As long as an artifact creature you control is attacking, prevent all damage that would be dealt to Sanwell, Avenger Ace.

Whenever Sanwell becomes tapped, exile the top six cards of your library. You may cast a Vehicle or artifact creature spell from among them. Then put the rest on the bottom of your library in a random order.

At the beginning of each player's end step, if no permanents left the battlefield this turn, that player loses X life, where X is Sarevok's power.

Choose a Background (You can have a Background as a second commander.)

Dragon spells you cast cost less to cast.

Whenever a Dragon enters the battlefield under your control, you may have Sarkhan, Soul Aflame become a copy of it until end of turn, except its name is Sarkhan, Soul Aflame and it's legendary in addition to its other types.

Vigilance, haste

As Saskia the Unyielding enters the battlefield, choose a player.

Whenever a creature you control deals combat damage to a player, it deals that much damage to the chosen player.

Menace

Whenever Satoru, the Infiltrator and/or one or more other nontoken creatures enter the battlefield under your control, if none of them were cast or no mana was spent to cast them, draw a card.

: Adapt 4. (If this creature has no +1/+1 counters on it, put four +1/+1 counters on it.)

Vigilance

Whenever an enchantment you control is put into a graveyard from the battlefield, put a +1/+1 counter on Savior of the Sleeping.

When Savvy Trader enters the battlefield, exile target permanent card from your graveyard. You may play that card for as long as it remains exiled.

Spells you cast from anywhere other than your hand cost less to cast.

Haste

Renown 1 (When this creature deals combat damage to a player, if it isn't renowned, put a +1/+1 counter on it and it becomes renowned.)

Whenever an opponent casts a noncreature spell, if Scab-Clan Berserker is renowned, Scab-Clan Berserker deals 2 damage to that player.

Protection from black

Whenever Scalestorm Summoner attacks, create a 3/1 red Dinosaur creature token if you control a creature with power 4 or greater.

Forestwalk (This creature can't be blocked as long as defending player controls a Forest.)

, : Unless an opponent pays , gain control of target artifact for as long as Scarwood Bandits remains on the battlefield.

As Scheming Fence enters the battlefield, you may choose a nonland permanent.

Activated abilities of the chosen permanent can't be activated.

Scheming Fence has all activated abilities of the chosen permanent except for loyalty abilities. You may spend mana as though it were mana of any color to activate those abilities.

Scholar of New Horizons enters the battlefield with a +1/+1 counter on it.

, Remove a counter from a permanent you control: Search your library for a Plains card and reveal it. If an opponent controls more lands than you, you may put that card onto the battlefield tapped. If you don't put the card onto the battlefield, put it into your hand. Then shuffle.

When Scholar of the Ages enters the battlefield, return up to two target instant and/or sorcery cards from your graveyard to your hand.

Kicker (You may pay an additional as you cast this spell.)

When Scorch Rider enters the battlefield, if it was kicked, it gains haste until end of turn.

: Add .

At the beginning of each upkeep, if no spells were cast last turn, transform Scorned Villager.

Double strike (This creature deals both first-strike and regular combat damage.)

When Scrapper Champion enters the battlefield, you get (two energy counters).

Whenever Scrapper Champion attacks, you may pay . If you do, put a +1/+1 counter on it.

, , Sacrifice Scribe of the Mindful: Return target instant or sorcery card from your graveyard to your hand.

When Sea Gate Oracle enters the battlefield, look at the top two cards of your library. Put one of them into your hand and the other on the bottom of your library.

, : Search your library for a Merfolk permanent card, put it onto the battlefield, then shuffle.

Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.)

: Searing Spear Askari gains menace until end of turn. (It can't be blocked except by two or more creatures.)

Whenever you attack with three or more creatures, Seasoned Consultant gets +2/+0 until end of turn.

Discard a card: Tap Seasoned Hallowblade. It gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

When Seasoned Pyromancer enters the battlefield, discard two cards, then draw two cards. For each nonland card discarded this way, create a 1/1 red Elemental creature token.

, Exile Seasoned Pyromancer from your graveyard: Create two 1/1 red Elemental creature tokens.

Menace

Ward—Pay 3 life. (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays 3 life.)

Magecraft — Whenever you cast or copy an instant or sorcery spell, create a 1/1 black and green Pest creature token with "When this creature dies, you gain 1 life."

: Draw a card, then discard a card. Activate only if you've cast a noncreature spell this turn.