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 Beatswitch Bot leaves the battlefield, if it's your turn, draw a card.

Flying
Whenever you amp it up, create a 1/1 colorless Servo artifact creature token.

Counter target noncreature spell. Search its controller's graveyard, hand, and library for any number of cards with the same name as that spell and exile them. That player shuffles, then draws a card for each card exiled from their hand this way.

When Beckoner of Ends enters, target player discards a card. Integrate that card.
Beckoner of Ends has deathtouch as long as a land card is integrated onto it.

{4}{B}{B}, Exile Begin the Imperial Era from your hand: At the beginning of your next upkeep, you may cast Begin the Imperial Era from exile without paying its mana cost. Activate only as a sorcery.
You draw three cards and each opponent discards three cards. Each player loses 3 life.

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.

Flash
Ward {3}
You may reveal the second card you draw each turn as you draw it. When you do, you may cast it without paying its mana cost. If you didn't cast a spell this way, create two Treasure tokens.

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

Creatures you control with power greater than their base power can't be blocked by more than one creature.
{G}{W}: Target creature gets +1/+1 until end of turn. Activate only as a sorcery.

Flash
When Benthalos of Land and Sea enters the battlefield, you may pay {X}. When you do, create a token that's a copy of target white or blue enchantment you control with mana value X or less.

Deathtouch
Whenever a creature you control deals combat damage to an opponent, draw a card. You lose 1 life unless that creature had deathtouch.

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.

Flash
Multitude {3}{W}{W}
Flying
When Binding Whisper enters the battlefield, tap target creature you don't control.

When Blackout Grifter enters, each opponent loses 1 life and you gain 1 life.
Cybersoul {3}{B}

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.

When Blasphemous Bonecaller enters the battlefield or dies, you draw a card and you lose 1 life.
{1}{B}, Discard Blasphemous Bonecaller: You draw a card and you lose 1 life.

When Bleakheart Instructor enters the battlefield, put a lifelink counter on target creature you control.

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