Blim does not have summoning sickness and cannot be blocked by an opponent.
You control a face-down creature whose front face is a permanent card.
Steps
Deal combat damage to an opponent using
Blim.
Blim triggers, giving control of
Karlov Watchdog to an opponent.
During the opponent's turn, activate
Blasting Station by tapping it and sacrificing a face-down creature you control.
When the creature dies,
Yarus's second ability triggers, returning it from your graveyard to the battlefield face-down as a 2/2 creature, and then not turning it face-up due to
Karlov Watchdog.
When the creature enters the battlefield,
Blasting Station triggers, untapping
Blasting Station.
Resolve the
Blasting Station ability from step 2.
Repeat from step 2.
Results
Infinite ETB.
Infinite sacrifice triggers.
Infinite death triggers.
Infinite damage.
Infinite LTB.
Metadata
In 0 decks according to EDHREC.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).