Destroy target tapped creature.

Target creature gains double strike until end of turn. (It deals both first-strike and regular combat damage.)

Flying, vigilance, deathtouch, lifelink
At the beginning of your end step, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Flying, protection from red

Each player chooses a number of lands they control equal to the number of lands controlled by the player who controls the fewest, then sacrifices the rest. Players discard cards and sacrifice creatures the same way.

Flying
When Battleflight Eagle enters the battlefield, target creature gets +2/+2 and gains flying until end of turn.

Metalcraft — When Blade-Tribe Berserkers enters the battlefield, if you control three or more artifacts, Blade-Tribe Berserkers gets +3/+3 and gains haste until end of turn.

Flying
When Bladewing the Risen enters the battlefield, you may return target Dragon permanent card from your graveyard to the battlefield.
: Dragon creatures get +1/+1 until end of turn.

Bladewing's Thrall has flying as long as you control a Dragon.
When a Dragon enters the battlefield, you may return Bladewing's Thrall from your graveyard to the battlefield.

, Sacrifice a creature: Blasting Station deals 1 damage to any target.
Whenever a creature enters the battlefield, you may untap Blasting Station.

Exile target creature an opponent controls. That player reveals cards from the top of their library until a creature card is revealed. The player puts that card onto the battlefield, then shuffles the rest into their library.
Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

Flying
When Blood-Toll Harpy enters the battlefield, each player loses 1 life.

Each noncreature, non-Equipment artifact is an Equipment with equip and "Equipped creature gets +X/+0," where X is that artifact's converted mana cost.

Equipped creature gets +1/+0.
Equip (: Attach to target creature you control. Equip only as a sorcery.)

Trample
Whenever Book Devourer deals combat damage to a player, you may discard all the cards in your hand. If you do, draw that many cards.

Battalion — Whenever Boros Mastiff and at least two other creatures attack, Boros Mastiff gains lifelink until end of turn. (Damage dealt by a creature with lifelink also causes its controller to gain that much life.)

At the beginning of each player's upkeep, that player discards a card at random.

When you cast this spell, any player may sacrifice a creature. If a player does, counter Brain Gorgers.
Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)