Return any number of target creature cards with total mana value twice X or less from your graveyard to the battlefield. They're artifacts in addition to their other types.

Bioengineered Opus enters with three +1/+1 counters, a lifelink counter, and a vigilance counter on it.
When Bioengineered Opus dies, for each creature you control, you may move a counter from Bioengineered Opus onto that creature.

{R}, {T}: Target creature gets +1/+0 and gains menace and haste until end of turn. Activate only as a sorcery.
{6}{R}{R}, {T}: Creatures you control get +1/+0 and gain menace and haste until end of turn. Activate only as a sorcery.

Creatures you control have “{T}: Create a Treasure token.”
{W}{U}{B}{R}{G}, Sacrifice Black-Tie Gala: Draw two cards.

Return target nonland permanent to its owner's hand. Then that player reveals their hand. You choose a nonland card from it. That player discards that card.

Equipped creature gets +1/+2 and has “At the beginning of your end step, put a time counter on Blade of Bright Futures.”
{2}, Sacrifice Blade of Bright Futures: You gain X life and draw X cards, where X is one plus the number of time counters on it. Activate only as a sorcery.
Equip {2}

Equipped creature gets +2/+1 and has “At the beginning of your end step, put a time counter on Blade of Clouded Pasts.”
{2}, Sacrifice Blade of Clouded Pasts: Target player loses X life and discards X cards, where X is one plus the number of time counters on it. Activate only as a sorcery.
Equip {2}

Exalted
{1}{W}, {T}: Tap target creature.

Haste
When this creature enters, put a +1/+1 counter on target creature you control.

Whenever an attacking creature you control dies, Bleeding Edge Memorial deals 1 damage to defending player.
Spellcharge 4

Bleeding Out deals 3 damage to any target. Excess damage dealt to a creature or planeswalker this way is dealt to its controller instead.

Lifelink
{1}{B}, {T}, Sacrifice a creature: Target opponent discards a card. Activate only as a sorcery.
{2}{B}, {T}, Exile a creature card from your graveyard: You draw a card and you lose 1 life. Activate only as a sorcery.

Flash
When Blightfang Zyxthax enters, discard a card. If you do, it gains deathtouch until end of turn.

Flash
When Blind Keelah enters and whenever you cast a spell during an opponent's turn, each opponent loses 1 life and you surveil 1. This ability triggers only once each turn.

Target creature gets +2/+2 until end of turn and must be blocked this turn if able. Untap up to one target creature. It blocks this turn if able.
Surface {4}{G}

Flying, haste
When Blistering Cryophoenix enters, discard any number of cards, then draw that many cards.
If a spell you own which had its flashback cost paid would be put into exile, put it into your hand instead.

Damned — When this creature enters, if you've sacrificed a permanent this turn, this creature deals 2 damage to each opponent.

Whenever Bloom Brute deals combat damage to a player, create two Berry tokens.

Flying
When Blooming Sauropod enters, create two Berry tokens, then sacrifice any number of Berries. For each Berry sacrificed this way, put a +1/+1 counter on another creature you control.

Revered
Whenever this creature attacks, you may pay {2} and discard a card. If you do, draw a card.

Flying
When Blue Collar Bloodsucker enters, you gain 2 life. Then if you control a red permanent, Blue Collar Bloodsucker deals 2 damage to each opponent.

Enchant creature
Enchanted creature has double strike.
Cycling {2}

Choose one. If you control a Weather as you cast this spell, you may choose both instead.
• Put a +1/+1 counter on target creature for each basic land type among lands you control.
• Target creature you control deals damage equal to its power to target creature you don't control.

Choose one. If you control a Weather as you cast this spell, you may choose both instead.
• Creatures you control get +2/+1 until end of turn.
• Boiling Storm deals 2 damage to each creature.

Choose one or both —
• Target creature you control gets +1/+1 until end of turn.
• Create a 1/1 white Human creature token.