MTG

Flash (You may cast this spell any time you could cast an instant.) When Whitemane Lion enters the battlefield, return a creature you control to it...

All Slivers have "When this permanent enters the battlefield, destroy target artifact or enchantment."

All Sliver creatures have defender. All Slivers have "When this permanent enters the battlefield, draw a card."

All Sliver creatures have "Whenever this creature is dealt damage, put a +1/+1 counter on it." (The damage is dealt before the counter is put on.)

Suspend 3—{2}{B}{B} (Rather than cast this card from your hand, pay {2}{B}{B} and exile it with three time counters on it. At the beginning of your...

All Sliver creatures get +1/+1.

{T}: Add one mana of any color. {T}: Put a charge counter on Coalition Relic. At the beginning of your precombat main phase, remove all charge coun...

Clockwork Hydra enters the battlefield with four +1/+1 counters on it. Whenever Clockwork Hydra attacks or blocks, remove a +1/+1 counter from it. ...

Search your library for a green creature card, reveal it, put it into your hand, then shuffle your library. At the beginning of your next upkeep, p...

Sacrifice Seal of Primordium: Destroy target artifact or enchantment.

Echo {1}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay ...

{T}: Add {C}{C}. {2}, {T}, Sacrifice Hedron Archive: Draw two cards.

Buyback {3} (You may pay an additional {3} as you cast this spell. If you do, put this card into your hand as it resolves.) Counter target spell wi...

Reach

As Gauntlet of Power enters the battlefield, choose a color. Creatures of the chosen color get +1/+1. Whenever a basic land is tapped for mana of t...

Whenever an opponent casts a spell, Kaervek the Merciless deals damage to any target equal to that spell's converted mana cost.

All Slivers have "Sacrifice this permanent: You gain 3 life."

Reach (This creature can block creatures with flying.) Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Reach When Penumbra Spider dies, create a 2/4 black Spider creature token with reach.

{R}, Return Grinning Ignus to its owner's hand: Add {C}{C}{R}. Activate this ability only any time you could cast a sorcery.

Echo {5}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay ...

Arc Blade deals 2 damage to any target. Exile Arc Blade with three time counters on it. Suspend 3—{2}{R} (Rather than cast this card from your hand...

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Target creature g...

Shadow (This creature can block or be blocked by only creatures with shadow.) Whenever Stronghold Rats deals combat damage to a player, each player...