: Draw a card for each Ally you control.

Flying, vigilance
, Pay 3 life: Regenerate Sentry of the Underworld.

Exile target card from a graveyard. You gain 3 life.

Enchant creature
Enchanted creature gets +2/+2 and has flying.
: Enchanted creature gets +1/+0 until end of turn.

When Shivan Sand-Mage enters the battlefield, choose one —
• Remove two time counters from target permanent or suspended card.
• Put two time counters on target permanent with a time counter on it or suspended card.
Suspend 4— (Rather than cast this card from your hand, you may pay and exile it with four time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, cast it without paying its mana cost. It has haste.)

: Shore Snapper gains islandwalk until end of turn. (It can't be blocked as long as defending player controls an Island.)

At the beginning of your upkeep or whenever you cast a red spell, put a charge counter on Shrine of Burning Rage.
, , Sacrifice Shrine of Burning Rage: It deals damage equal to the number of charge counters on it to any target.

Search your library for three creature cards and reveal them. If you reveal three cards with different names, choose one of them at random and put that card into your hand. Shuffle the rest into your library.

Exploit (When this creature enters the battlefield, you may sacrifice a creature.)
When Silumgar Butcher exploits a creature, target creature gets -3/-3 until end of turn.

Megamorph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)
When Silumgar Spell-Eater is turned face up, counter target spell unless its controller pays .

Players can't gain life this turn. Damage can't be prevented this turn. Skullcrack deals 3 damage to target player or planeswalker.

Whenever Slavering Nulls deals combat damage to a player, if you control a Swamp, you may have that player discard a card.

Wither (This deals damage to creatures in the form of -1/-1 counters.)
Whenever Slinking Giant blocks or becomes blocked, it gets -3/-0 until end of turn.

Enchant nonland permanent
At the beginning of the upkeep of enchanted permanent's controller, that player sacrifices it unless they pay , where X is its converted mana cost.

Swampwalk, forestwalk (This creature can't be blocked as long as defending player controls a Swamp or a Forest.)

Reveal the top five cards of your library and separate them into two piles. An opponent chooses one of those piles. Put that pile into your hand and the other into your graveyard.

Stitched Mangler enters the battlefield tapped.
When Stitched Mangler enters the battlefield, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

When Stonehorn Dignitary enters the battlefield, target opponent skips their next combat phase.

Target player chooses three cards from their hand and puts them on top of their library in any order.

Flash (You may cast this spell any time you could cast an instant.)
Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
White creatures get +1/-1.