mtg.wtf

As Sea Gate, Reborn enters the battlefield, you may pay 3 life. If you don't, it enters the battlefield tapped.
{T}: Add {U}.

Sea of Clouds enters the battlefield tapped unless you have two or more opponents.
{T}: Add {W} or {U}.

Mutate {1}{U}
Flash
Whenever this creature deals combat damage to a player, draw a card.

Seachrome Coast enters the battlefield tapped unless you control two or fewer other lands.
{T}: Add {W} or {U}.

Seafaring Werewolf can't be blocked.
Whenever Seafaring Werewolf deals combat damage to a player, draw a card.
Nightbound

Whenever a Merfolk you control deals combat damage to a player, draw a card.

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

Sacrifice Seal of Cleansing: Destroy target artifact or enchantment.

Sacrifice Seal of Doom: Destroy target nonblack creature. It can't be regenerated.

Sacrifice Seal of Strength: Target creature gets +3/+3 until end of turn.

Sealock Monster can't attack unless defending player controls an Island.
{5}{U}{U}: Monstrosity 3.
When Sealock Monster becomes monstrous, target land becomes an Island in addition to its other types.

At the beginning of your upkeep, surveil 1. Then if you have seven or more cards in your graveyard, you may transform Search for Azcanta.

Look at the top five cards of your library. You may put any number of them into your hand and the rest into your graveyard. You lose 3 life for each card you put into your hand this way.

Search your library for a snow permanent card, a legendary card, or a Saga card, reveal it, put it into your hand, then shuffle. You gain 1 life for each {S} spent to cast this spell.

Search your library for a basic land card, put it onto the battlefield, then shuffle.
Suspend 2—{G}

When Search the City enters the battlefield, exile the top five cards of your library.
Whenever you play a card with the same name as one of the exiled cards, you may put one of those cards with that name into its owner's hand. Then if there are no cards exiled with Search the City, sacrifice it. If you do, take an extra turn after this one.

Whenever a creature attacks you or a planeswalker you control, investigate.

Searing Blaze deals 1 damage to target player or planeswalker and 1 damage to target creature that player or that planeswalker's controller controls.
Landfall — If you had a land enter the battlefield under your control this turn, Searing Blaze deals 3 damage to that player or planeswalker and 3 damage to that creature instead.

Destroy target attacking or blocking creature with power 2 or less.

Searing Spear deals 3 damage to any target.

{T}: Add {R}.

Seaside Citadel enters the battlefield tapped.
{T}: Add {G}, {W}, or {U}.

Add one mana of any color.

Discard a card: Tap Seasoned Hallowblade. It gains indestructible until end of turn.

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