Flying

Corrupted — As long as an opponent has three or more poison counters, Bonepicker Skirge has deathtouch and lifelink.

Equipped creature gets +2/+0.

Equip

When Boneyard Aberration dies, exile it. If you do, conjure three cards named Reassembling Skeleton into your graveyard.

Menace, indestructible

Bontu the Glorified can't attack or block unless a creature died under your control this turn.

, Sacrifice another creature: Scry 1. Each opponent loses 1 life and you gain 1 life.

Any player may have Book Burning deal 6 damage to them. If no one does, target player mills six cards.

: Flip a coin. If you win the flip, destroy all nonland permanents.

Constellation — Whenever Boon of the Spirit Realm or another enchantment you control enters, put a blessing counter on Boon of the Spirit Realm.

Creatures you control get +1/+1 for each blessing counter on Boon of the Spirit Realm.

If you would gain life, you gain twice that much life instead.

When Boonweaver Giant enters, you may search your graveyard, hand, and/or library for an Aura card and put it onto the battlefield attached to Boonweaver Giant. If you search your library this way, shuffle.

Whenever you cast a silver-bordered spell, put a +1/+1 counter on Border Guardian.

Whenever you cast a black-bordered spell, Border Guardian can't be blocked this turn.

Whenever you cast a white-bordered spell, Border Guardian gains double strike until end of turn.

: Add .

Whenever you cast a creature spell, if of any of that spell's colors was spent to cast it, that creature enters with an additional +1/+1 counter on it. ( is mana from a snow source.)

Enchant artifact or creature

As long as enchanted permanent is a creature, it gets +1/+1 for each creature and/or Vehicle you control.

Channel — , Discard Born to Drive: Create two 1/1 colorless Pilot creature tokens with "This creature crews Vehicles as though its power were 2 greater."

Whenever Boromir, Gondor's Hope enters or attacks, look at the top six cards of your library. You may reveal a Human or artifact card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Battalion — Whenever Boros Elite and at least two other creatures attack, Boros Elite gets +2/+2 until end of turn.

Boros Garrison enters tapped.

When Boros Garrison enters, return a land you control to its owner's hand.

: Add .

: Target creature gains haste until end of turn.

: Target creature gains first strike until end of turn.

( can be paid with either or .)

First strike

Battalion — Whenever Boros Strike-Captain and at least two other creatures attack, exile the top card of your library. During any turn you attacked with three or more creatures, you may play that card.

Escalate (Pay this cost for each mode chosen beyond the first.)

Choose one or both —

• Target creature gets +3/+0 until end of turn.

• Target creature gains first strike until end of turn.

Draw a card for each tapped creature target opponent controls.

When Boseiju Pathlighter enters the battlefield, draft a card from Boseiju Pathlighter's spellbook.

: Add .

Channel — , Discard Boseiju, Who Endures: Destroy target artifact, enchantment, or nonbasic land an opponent controls. That player may search their library for a land card with a basic land type, put it onto the battlefield, then shuffle. This ability costs less to activate for each legendary creature you control.

Trample

, Sacrifice an artifact: Bosh, Iron Golem deals damage equal to the sacrificed artifact's mana value to any target.

Trample

Botanical Brawler enters with two +1/+1 counters on it.

Whenever one or more +1/+1 counters are put on another permanent you control, if it's the first time +1/+1 counters have been put on that permanent this turn, put a +1/+1 counter on Botanical Brawler.

Botanical Sanctum enters tapped unless you control two or fewer other lands.

: Add or .

, Sacrifice Bottle of Suleiman: Flip a coin. If you win the flip, create a 5/5 colorless Djinn artifact creature token with flying. If you lose the flip, Bottle of Suleiman deals 5 damage to you.

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

Bouncing Beebles can't be blocked as long as defending player controls an artifact.

Enchant creature

Enchanted creature can't attack, block, or transform.

Sacrifice another permanent: Attach Bound by Moonsilver to target creature. Activate only as a sorcery and only once each turn.

Enchant creature

Enchanted creature can't attack or block.

Flash (You may cast this spell any time you could cast an instant.)

When Bounding Krasis enters, you may tap or untap target creature.

Flying

Whenever you cast a Spirit or Arcane spell, you may gain life equal to that spell's mana value.

: Add .

, Sacrifice Bountiful Landscape: Search your library for a basic Forest, Island, or Mountain card, put it onto the battlefield tapped, then shuffle.

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

Target creature gets +3/+3 until end of turn.

Target creature gets +3/+3 until end of turn.

Target creature gets +3/+3 until end of turn.

Roll a six-sided die. Create a number of 1/1 red Goblin creature tokens equal to the result.

Prevent all damage that would be dealt to target multicolored creature this turn. For each 1 damage prevented this way, put a +1/+1 counter on that creature.

Brackish Trudge enters tapped.

: Return Brackish Trudge from your graveyard to your hand. Activate only if you gained life this turn.

While voting, you get an additional vote. (The votes can be for different choices or for the same choice.)

Braided Net enters with three net counters on it.

, Remove a net counter from Braided Net: Tap another target nonland permanent. Its activated abilities can't be activated for as long as it remains tapped.

Craft with artifact

At the beginning of your end step, you may sacrifice an artifact, creature, enchantment, land, or planeswalker. If you do, each opponent may sacrifice a permanent of their choice that shares a card type with it. For each opponent who doesn't, that player loses 2 life and you draw a card.

At the beginning of each player's upkeep, that player may put an artifact, creature, or land card from their hand onto the battlefield.

: You gain 1 life.

Target player mills three cards.

Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)

, : Put a charge counter on Brain in a Jar, then you may cast an instant or sorcery spell with mana value equal to the number of charge counters on Brain in a Jar from your hand without paying its mana cost.

, , Remove X charge counters from Brain in a Jar: Scry X.

Choose a nonland card name. Target player reveals their hand. That player discards a card with that name. If they can't, you draw a card.

Target opponent reveals their hand. You choose a card from it. That player discards that card.

Draw a card.

Destroy target creature that isn't enchanted. It can't be regenerated.

Transmute (, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

, , Sacrifice Brainstone: Draw three cards, then put two cards from your hand on top of your library in any order.

Draw four cards, then put two cards from your hand on top of your library in any order.