Flying

Keen Sight — When Scouting Hawk enters, if an opponent controls more lands than you, search your library for a basic Plains card, put it onto the battlefield tapped, then shuffle.

You may have Sculpting Steel enter as a copy of any artifact on the battlefield.

Exile the top two cards of your library. Until your next end step, you may play those cards.

When Sentinel of Lost Lore enters, choose one or more —

• Return target card you own in exile that has an Adventure to your hand.

• Put target card you don't own in exile that has an Adventure on the bottom of its owner's library.

• Exile target player's graveyard.

Vigilance

Whenever Sentinel of the Nameless City enters or attacks, create a Map token. (It's an artifact with ", , Sacrifice this artifact: Target creature you control explores. Activate only as a sorcery.")

Haste

As long as an artifact entered the battlefield under your control this turn, creatures you control get +2/+2.

Battalion — Whenever Sentinel Sarah Lyons and at least two other creatures attack, Sentinel Sarah Lyons deals damage equal to the number of artifacts you control to target player.

Vigilance, reach

Whenever an instant or sorcery spell is cast during your turn, Sentinel Tower deals damage to any target equal to 1 plus the number of instant and sorcery spells cast before that spell this turn.

Flash

Enchant creature

Enchanted creature gets +1/+2 and has vigilance.

Addendum — When Sentinel's Mark enters, if you cast it during your main phase, enchanted creature gains lifelink until end of turn.

Landfall — Whenever a land you control enters,

Augment (, Reveal this card from your hand: Combine it with target host. Augment only as a sorcery.)

Whenever Serpentine Basilisk deals combat damage to a creature, destroy that creature at end of combat.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

: Serpentine Kavu gains haste until end of turn.

Deathtouch

Whenever Servant of the Stinger deals combat damage to a player, if you've committed a crime this turn, you may sacrifice Servant of the Stinger. If you do, search your library for a card, put it into your hand, then shuffle. (Targeting opponents, anything they control, and/or cards in their graveyards is a crime.)

Create a 4/4 green Beast creature token.

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Exchange control of two target lands.

Splice onto Arcane (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

Spree (Choose one or more additional costs.)

+ — Exchange control of two target creatures.

+ — Exchange control of two target artifacts.

+ — Exchange control of two target enchantments.

Enchant creature

Enchanted creature has haste and "At the beginning of your upkeep, destroy this creature. Reveal cards from the top of your library until you reveal a creature card. Put that card onto the battlefield and attach Shifting Shadow to it, then put all other cards revealed this way on the bottom of your library in a random order."

Slivers can't be blocked except by Slivers.

Shifting Woodland enters tapped unless you control a Forest.

: Add .

Delirium — : Shifting Woodland becomes a copy of target permanent card in your graveyard until end of turn. Activate only if there are four or more card types among cards in your graveyard.

Backup 1 (When this creature enters, put a +1/+1 counter on target creature. If that's another creature, it gains the following ability until end of turn.)

Vigilance

Flying, hexproof

Whenever a Dragon you control attacks, creatures defending player controls get -1/-1 until end of turn.

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

Flying, defender

If Skyclave Sentinel was kicked, it enters with two +1/+1 counters on it.

As long as Skyclave Sentinel has a +1/+1 counter on it, it can attack as though it didn't have defender.

Sacrifice an artifact: Target artifact gains indestructible until end of turn.

, , Sacrifice another artifact: Reveal the top eight cards of your library. Put up to two noncreature artifact cards with total mana value less than or equal to the sacrificed artifact's mana value from among them onto the battlefield and the rest on the bottom of your library in a random order.

Whenever Snorting Gahr becomes blocked, it gets +2/+2 until end of turn.

Flash

Enchant creature

Enchanted creature gets +1/+1.

As long as enchanted creature has vigilance, it assigns combat damage equal to its toughness rather than its power.

Spectator Seating enters tapped unless you have two or more opponents.

: Add or .

Whenever Spitting Dilophosaurus enters or attacks, put a -1/-1 counter on up to one target creature.

Creatures your opponents control with -1/-1 counters on them can't block.

Spitting Earth deals damage to target creature equal to the number of Mountains you control.

Spitting Hydra enters with four +1/+1 counters on it.

, Remove a +1/+1 counter from Spitting Hydra: It deals 1 damage to target creature.

All Sliver creatures have first strike.

Reach (This creature can block creatures with flying.)

Sacrifice a land: Spitting Spider deals 1 damage to each creature with flying.

: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.)

When Splitting Slime becomes monstrous, create a token that's a copy of Splitting Slime. (The token has no counters and isn't monstrous.)

Sprinting Warbrute attacks each combat if able.

Dash (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)

Defender (This creature can't attack.)

Whenever Sprouting Phytohydra is dealt damage, you may create a token that's a copy of Sprouting Phytohydra.

When Sprouting Thrinax dies, create three 1/1 green Saproling creature tokens.

Destroy target land. Star of Extinction deals 20 damage to each creature and each planeswalker.

Vigilance

Eternalize (, Exile this card from your graveyard: Create a token that's a copy of it, except it's a 4/4 black Zombie Human Cleric with no mana cost. Eternalize only as a sorcery.)

Equipped creature gets +1/+1 and has haste.

At the beginning of each combat, untap equipped creature.

Equipped creature has first strike as long as it's blocking or blocked by a Goblin or Orc.

Equip

Flying, trample

Stingerback Terror gets -1/-1 for each card in your hand.

Plot (You may pay and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)

Defender (This creature can't attack.)

, : Stinging Barrier deals 1 damage to any target.

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)

When Stinging Hivemaster dies, create a 1/1 colorless Phyrexian Mite artifact creature token with toxic 1 and "This creature can't block."

Whenever you cast your first spell during each opponent's turn, you may tap or untap target nonland permanent.

Put three -1/-1 counters on target creature with flying.

Cycling (, Discard this card: Draw a card.)

Stingmoggie enters with two +1/+1 counters on it.

, Remove a +1/+1 counter from Stingmoggie: Destroy target artifact or land.

Prowl (You may cast this for its prowl cost if you dealt combat damage to a player this turn with a Goblin or Rogue.)

Whenever a Rogue you control attacks and isn't blocked, it gets +2/+1 until end of turn.

Flying

Whenever Stinkweed Imp deals combat damage to a creature, destroy that creature.

Dredge 5 (If you would draw a card, you may mill five cards instead. If you do, return this card from your graveyard to your hand.)

When this creature enters,

exile target creature card with mana value 2 or less from your graveyard. If it has augment, combine it with a host you control. Otherwise, put it onto the battlefield.

Creatures your opponents control get -1/-1 until end of turn.

Cycling (, Discard this card: Draw a card.)

Whenever Sungold Sentinel enters or attacks, exile up to one target card from a graveyard.

Coven — : Choose a color. Sungold Sentinel gains hexproof from that color until end of turn and can't be blocked by creatures of that color this turn. Activate only if you control three or more creatures with different powers.