Breath of Fury attached to another creature you control that can attack this turn.
You control at least one creature token.
An opponent cannot block creatures you control.
Steps
At the beginning of your combat phase, Phabine triggers, causing each player to reveal the top card of their library, then causing you to create a 1/1 Citizen creature token for each land card revealed this way, then giving creatures you control +1/+1 until end of turn for each nonland card revealed this way, then causing each player to draw a card.
Declare Ghired and the creature with Breath of Fury attached as attackers.
Ghired triggers, creating a token copy of a creature token you control that is tapped and attacking.
Deal combat damage to an opponent using the creature with Breath of Fury attached.
Breath of Fury triggers, causing you to sacrifice the creature with Breath of Fury attached, then attach Breath of Fury to a creature token you control, untap all creatures you control and to get an additional combat phase after this one.
Repeat each combat phase.
Results
Infinite card draw for all players.
Infinite draw triggers for all players.
Near-infinite combat damage.
Near-infinite combat phases.
Near-infinite creature tokens with haste.
Near-infinite death triggers.
Near-infinite ETB.
Near-infinite LTB.
Near-infinitely large creatures until end of turn.