Menace
Bastion Breaker can't block.

Defender, reach

Solidarity
Whenever Battlehymn Howler attacks, add an amount of {G} equal to its power. Until end of turn, you don't lose this mana as steps and phases end.

Whenever a land card is put into your graveyard from anywhere, Bearer of Autumn gets +1/+1 and gains trample until end of turn.

When Beastbond Instructor enters the battlefield, put a trample counter on target creature you control.

Reach, haste
Drop — When Beat Devastator enters the battlefield, if you didn't cast any creature spells during your last turn, Beat Devastator gains vigilance until end of turn. Up to one target creature blocks it this turn if able.

When Beguiling Stewards enters, if it's not a token, create a token that's a copy of it.
Beguiling Stewards has deathtouch as long as you control another creature named Beguiling Stewards.

At the beginning of combat of your turn, Belief-Belying Beast gains flying until end of turn if you control a creature with flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance.

Trample
When Belligerent Peluda enters the battlefield, it deals 2 damage to any target.

Ruins you control can't be blocked by creatures with power 2 or less.
{1}, {T}: Put a +1/+1 counter on target Ruin.
Spellcharge 5

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}

When Bladeforge Instructor enters the battlefield, put a first strike counter on target creature you control.

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

Enchant creature
Enchanted creature has double strike.

Trample, haste
Revolt — At the beginning of your end step, sacrifice Bloodfrenzied Vanguard unless another permanent you controlled left the battlefield this turn.

Target creature gets +3/+2 and gains trample until end of turn.

Flying, trample
When Blooming Cocollona enters the battlefield, you may have it deal 3 damage to another target creature or planeswalker. If you do, that permanent's controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Destroy target artifact creature or creature with flying.

Once each turn, when you play a card from anywhere but your hand, you may create a tapped Treasure token.
{2}{R}: Level 2
At the beginning of your upkeep, exile the top card of your library. You may play that card this turn.
{3}{R}: Level 3
Whenever another permanent you control leaves the battlefield, this Class deals 1 damage to any target.

Braise deals 5 damage to target creature or planeswalker. When it dies this turn, its controller creates a Food token.

When Brass Baker enters the battlefield, create a Food token.

Whenever you cast an instant spell, put a +1/+1 counter on Brass Oracle.
Whenever you cast a sorcery spell, Brass Oracle deals damage to any target equal to its power.

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. Creatures you control with menace get +1/+0 until end of turn.

Target attacking creature gets +3/+3 until end of turn. Put a trample counter on that creature.