B.O.B. (Bevy of Beebles) — ruling 1

If B.O.B. gains loyalty, the Beeble you create is a 1/1 blue Beeble creature token.

B.O.B. (Bevy of Beebles) — ruling 2

B.O.B.’s loyalty counts all Beebles you control, not just the tokens B.O.B. creates. Or separates? Whatever B.O.B. does.

B.O.B. (Bevy of Beebles) — ruling 3

B.O.B. is not a creature and is not itself a Beeble.

B.O.B. (Bevy of Beebles) — ruling 4

Every time B.O.B loses loyalty, you choose which Beebles to sacrifice. If B.O.B. is dealt more damage than the number of Beebles you control, you sacrifice all of them, and then B.O.B. is put into its owner’s graveyard.

B.O.B. (Bevy of Beebles) — ruling 5

Sacrificing Beebles to account for B.O.B.’s lost loyalty happens before state-based actions clean up the lethally-damaged Beebles. The one that blocked can heroically be the one you sacrifice. Farewell, brave Beeble. B.O.B.-speed.

B.O.B. (Bevy of Beebles) — ruling 6

If you control Doubling Season or a similar card that applies “is an effect would create one or more tokens,” you’d create eight Beebles as B.O.B. enters the battlefield. However, because such cards apply only to effects and not costs, you’d still create only one Beeble if you activated B.O.B.’s first loyalty ability.

B.O.B. (Bevy of Beebles) — ruling 7

Conversely, other cards like Primal Vigor don’t mention “effects.” If you control one of these cards, activating B.O.B.’s first loyalty ability would cause you to create two Beebles, and thus put two loyalty counters on B.O.B.

B.O.B. (Bevy of Beebles) : règles, fonctionnement et interactions (MTG)

B.O.B. (Bevy of Beebles) is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

As B.O.B. enters, create four 1/1 blue Beeble creature tokens. The number of loyalty counters on B.O.B. is equal to the number of Beebles you control. (Create or sacrifice Beebles whenever B.O.B. gains or loses loyalty.) +1: Up to X target Beebles can't be blocked this turn, where X is the number of cards in your hand. −1: Draw a card.

How it works : B.O.B. (Bevy of Beebles)

Original English text — Wizards of the Coast / Scryfall

#1February 29, 2020· Wizards of the Coast
If B.O.B. gains loyalty, the Beeble you create is a 1/1 blue Beeble creature token.
Card named in this ruling
Beeble
#2February 29, 2020· Wizards of the Coast
B.O.B.’s loyalty counts all Beebles you control, not just the tokens B.O.B. creates. Or separates? Whatever B.O.B. does.
Card named in this ruling
Beeble
#3February 29, 2020· Wizards of the Coast
B.O.B. is not a creature and is not itself a Beeble.
Card named in this ruling
Beeble
#4February 29, 2020· Wizards of the Coast
Every time B.O.B loses loyalty, you choose which Beebles to sacrifice. If B.O.B. is dealt more damage than the number of Beebles you control, you sacrifice all of them, and then B.O.B. is put into its owner’s graveyard.
Card named in this ruling
Beeble
#5February 29, 2020· Wizards of the Coast
Sacrificing Beebles to account for B.O.B.’s lost loyalty happens before state-based actions clean up the lethally-damaged Beebles. The one that blocked can heroically be the one you sacrifice. Farewell, brave Beeble. B.O.B.-speed.
Card named in this ruling
Beeble
#6February 29, 2020· Wizards of the Coast
If you control Doubling Season or a similar card that applies “is an effect would create one or more tokens,” you’d create eight Beebles as B.O.B. enters the battlefield. However, because such cards apply only to effects and not costs, you’d still create only one Beeble if you activated B.O.B.’s first loyalty ability.
Card named in this ruling
Beeble
#7February 29, 2020· Wizards of the Coast
Conversely, other cards like Primal Vigor don’t mention “effects.” If you control one of these cards, activating B.O.B.’s first loyalty ability would cause you to create two Beebles, and thus put two loyalty counters on B.O.B.
Card named in this ruling
Beeble