Flying Slumbering Dragon can't attack or block unless it has five or more +1/+1 counters on it. Whenever a creature attacks you or a planeswalker you control, put a +1/+1 counter on Slumbering Dragon.
Whenever an enchantment enters the battlefield under your control, scry 1. {2}{W}: Slumbering Keepguard gets +1/+1 until end of turn for each enchantment you control.
Dreams of a realm united gave him strength even in sleep.
{2}, Discard a Spirit or Arcane card: Slumbering Tora becomes an X/X Cat artifact creature until end of turn, where X is the discarded card's mana value.
Slurrk, All-Ingesting enters the battlefield with five +1/+1 counters on it. Whenever Slurrk or another creature you control dies, if it had a +1/+1 counter on it, put a +1/+1 counter on each creature you control that has a +1/+1 counter on it. Partner
Whenever Sly Spy deals combat damage to a player, that player reveals their hand. You choose a card from it with the longest name. That player discards that card.
The Agents of S.N.E.A.K.—Serious, Nonstop Espionage and Kidnapping.
Whenever Sly Spy deals combat damage to a player, you may destroy target creature facing left in its art. (Creatures without faces don't face anywhere.)
The Agents of S.N.E.A.K.—Silent Ninjas Evading Any Kapture.
Whenever Sly Spy deals combat damage to a player, that player loses a finger until Sly Spy leaves the battlefield. (The finger is chosen by its owner and can't roll dice or touch cards.)
The Agents of S.N.E.A.K.—Sinister Nerds Eliminating All Knowledge.
Whenever Sly Spy deals combat damage to a player, you may destroy target creature facing right in its art. (Creatures without faces don't face anywhere.)
The Agents of S.N.E.A.K.—Skilled, Notably Efficient Assassin-Kickers.
Whenever Sly Spy deals combat damage to a player, that player reveals the top card of their library. Put that card into your hand and you lose life equal to its mana value.
The Agents of S.N.E.A.K.—Spies Nimbly Eluding Adversaries' Knives.
Whenever Smart Ass attacks, choose a card name. If defending player has no cards with the chosen name in their hand, they may reveal their hand. If they don't reveal their hand, Smart Ass can't be blocked this turn.
Ravnica's laws protect not its citizens but its industry. Aging equipment is destroyed rather than restored, to bring more money into the factories' coffers.
Choose one — • Destroy target artifact. • Destroy target creature with defender. • Smash to Dust deals 1 damage to each creature your opponents control.
Destroy target artifact. Smash to Smithereens deals 3 damage to that artifact's controller.
The giant Tarvik dreamed that trinkets and machines caused all the world's woe. When he awoke from his troubled sleep, he took the name Tarvik Relicsmasher.
When Smelt-Ward Gatekeepers enters the battlefield, if you control two or more Gates, gain control of target creature an opponent controls until end of turn. Untap that creature. It gains haste until end of turn.
{2}{R}, Sacrifice Smelt-Ward Ignus: Gain control of target creature with power 3 or less until end of turn. Untap that creature. It gains haste until end of turn. Activate only as a sorcery.