: Add .

, : Draw a card. Activate only if you control a creature with power 4 or greater.

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

Enchant creature

Enchanted creature doesn't untap during its controller's untap step.

Create a tapped 4/1 black Skeleton creature token with menace. (Then exile this card. You may cast the artifact later from exile.)

As an additional cost to cast this spell, sacrifice a creature.

Destroy target creature.

When Boneclad Necromancer enters the battlefield, you may exile target creature card from a graveyard. If you do, create a 2/2 black Zombie creature token.

Flying

Threshold — As long as seven or more cards are in your graveyard, Boneshard Slasher gets +2/+2 and has "When Boneshard Slasher becomes the target of a spell or ability, sacrifice it."

All Sliver creatures get +2/+0.

Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)

Whenever this creature mutates, return target permanent card from your graveyard to your hand.

Reach

When Bonny Pall, Clearcutter enters the battlefield, create Beau, a legendary blue Ox creature token with "This creature's power and toughness are each equal to the number of lands you control."

Whenever you attack, draw a card, then you may put a land card from your hand or graveyard onto the battlefield.

Destroy all creatures. Lands you control don't untap during your next untap step.

Whenever you crank Boomflinger, roll two six-sided dice. Boomflinger deals damage to target player or planeswalker equal to the difference between those results.

Enchant creature

Enchanted creature gets +3/-3.

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

Lands you control have ": Create a Treasure token."

Vigilance

When Borderland Explorer enters the battlefield, each player may discard a card. Each player who discarded a card this way may search their library for a basic land card, reveal it, put it into their hand, then shuffle.

: Boreal Centaur gets +1/+1 until end of turn. Activate only once each turn. ( can be paid with one mana from a snow source.)

Flying

Spells your opponents cast that target Boreal Elemental cost more to cast.

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

, : Create a 1/1 black and red Demon creature token named Minor Demon.

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)

: Boros Challenger gets +1/+1 until end of turn.

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

Boros Guildgate enters the battlefield tapped.

: Add or .

: Add or .

, , Sacrifice Boros Locket: Draw two cards.

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.

Domain — When Bortuk Bonerattle enters the battlefield, if you cast it, choose target creature card in your graveyard. Return that card to the battlefield if its mana value is less than or equal to the number of basic land types among lands you control. Otherwise, put it into your hand.

Boseiju, Who Shelters All enters the battlefield tapped.

, Pay 2 life: Add . If that mana is spent on an instant or sorcery spell, that spell can't be countered.

Trample

Botanical Brawler enters the battlefield 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 the battlefield tapped unless you control two or fewer other lands.

: Add or .

Trample

When Bottle Golems dies, you gain life equal to its power.

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for .)

Bottle-Cap Blast deals 5 damage to any target. If excess damage was dealt to a permanent this way, create that many tapped Treasure tokens. (They're artifacts with ", Sacrifice this artifact: Add one mana of any color.")

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

Target creature gets +2/+0 until end of turn. (Then exile this card. You may cast the creature later from exile.)

When Boulderbranch Golem enters the battlefield, you gain life equal to its power.

//PRT-Prototype_Mech//

Prototype (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)

3/3

: Add .

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.

Whenever Bounding Felidar attacks while saddled, put a +1/+1 counter on each other creature you control. You gain 1 life for each of those creatures.

Saddle 2 (Tap any number of other creatures you control with total power 2 or more: This Mount becomes saddled until end of turn. Saddle only as a sorcery.)

Search your library for up to X basic land cards, where X is the number of lands you control, put them onto the battlefield tapped, then shuffle.

Bountiful Promenade enters the battlefield tapped unless you have two or more opponents.

: Add or .

Attacking creatures you control have deathtouch.

, : Choose one —

• Put a +1/+1 counter on target creature.

• Bow of Nylea deals 2 damage to target creature with flying.

• You gain 3 life.

• Put up to four target cards from your graveyard on the bottom of your library in any order.

Return target creature to its owner's hand. If it was tapped, create a Map token. (It's an artifact with ", , Sacrifice this artifact: Target creature you control explores. Activate only as a sorcery.")

Flying

Whenever Brago, King Eternal deals combat damage to a player, exile any number of target nonland permanents you control, then return those cards to the battlefield under their owner's control.

Read ahead (Choose a chapter and start with that many lore counters. Add one after your draw step. Skipped chapters don't trigger. Sacrifice after III.)

I — You may sacrifice a creature. If you do, each opponent discards a card.

II — Return target creature card from your graveyard to your hand.

III — Target opponent may sacrifice a nonland, nontoken permanent. If they don't, they lose 2 life and you 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.)

Partner with Shabraz, the Skyshark (When this creature enters the battlefield, target player may put Shabraz into their hand from their library, then shuffle.)

Whenever you discard a card, put a +1/+1 counter on Brallin, Skyshark Rider and it deals 1 damage to each opponent.

: Target Shark gains trample until end of turn.

Whenever Bramble Creeper attacks, it gets +5/+0 until end of turn.

: Add .

, , Discard a card: Return Bramble Familiar to its owner's hand.

Reach, trample

When Bramble Wurm enters the battlefield, you gain 5 life.

, Exile Bramble Wurm from your graveyard: You gain 5 life.