Activate Goblin Bombardment by sacrificing Moorland Rescuer.
Moorland Rescuer dies, triggering itself and Hofri Ghostforge.
Resolve the Hofri Ghostforge trigger, exiling Moorland Rescuer from your graveyard and creating a token copy of Moorland Rescuer that has "When this creature leaves the battlefield, return the exiled card to your graveyard".
Resolve the Moorland Rescuer trigger, returning nothing from your graveyard to the battlefield.
Activate Goblin Bombardment by sacrificing the Moorland Rescuer token.
The Moorland Rescuer token dies, triggering itself twice.
Resolve the Moorland Rescuer token's trigger granted by Hofri Ghostforge, returning Moorland Rescuer from exile to your graveyard.
Resolve the other Moorland Rescuer trigger, returning Moorland Rescuer from your graveyard to the battlefield.
Resolve the Goblin Bombardment abilities from steps 1 and 5, dealing 2 damage to any target(s).
Repeat.

Infinite damage

Infinite death triggers

Infinite ETB

Infinite LTB

Infinite sacrifice triggers

Hofri Ghostforge

Moorland Rescuer

Goblin Bombardment

Activate Ashnod's Altar by sacrificing Moorland Rescuer, adding {C}{C}.
Moorland Rescuer dies, triggering itself and Hofri Ghostforge.
Resolve the Hofri Ghostforge trigger, exiling Moorland Rescuer from your graveyard and creating a token copy of Moorland Rescuer that has "When this creature leaves the battlefield, return the exiled card to your graveyard".
Resolve the Moorland Rescuer trigger, returning nothing from your graveyard to the battlefield.
Activate Ashnod's Altar by sacrificing the Moorland Rescuer token, adding {C}{C}.
The Moorland Rescuer token dies, triggering itself twice.
Resolve the Moorland Rescuer token's trigger granted by Hofri Ghostforge, returning Moorland Rescuer from exile to your graveyard.
Resolve the other Moorland Rescuer trigger, returning Moorland Rescuer from your graveyard to the battlefield.
Repeat.

Infinite colorless mana

Ashnod's Altar

Activate Altar of Dementia by sacrificing Moorland Rescuer.
Moorland Rescuer dies, triggering itself and Hofri Ghostforge.
Resolve the Hofri Ghostforge trigger, exiling Moorland Rescuer from your graveyard and creating a token copy of Moorland Rescuer that has "When this creature leaves the battlefield, return the exiled card to your graveyard".
Resolve the Moorland Rescuer trigger, returning nothing from your graveyard to the battlefield.
Resolve the Altar of Dementia ability from step 1, causing target player to mill cards equal to Moorland Rescuer's power.
Activate Altar of Dementia by sacrificing the Moorland Rescuer token.
The Moorland Rescuer token dies, triggering itself twice.
Resolve the Moorland Rescuer token's trigger granted by Hofri Ghostforge, returning Moorland Rescuer from exile to your graveyard.
Resolve the other Moorland Rescuer trigger, returning Moorland Rescuer from your graveyard to the battlefield.
Resolve the Altar of Dementia ability from step 6, causing target player to mill cards equal to Moorland Rescuer's power.
Repeat.

Infinite mill

Infinite self-mill

Altar of Dementia

Activate Phyrexian Altar by sacrificing Moorland Rescuer, adding one mana of any color.
Moorland Rescuer dies, triggering itself and Hofri Ghostforge.
Resolve the Hofri Ghostforge trigger, exiling Moorland Rescuer from your graveyard and creating a token copy of Moorland Rescuer that has "When this creature leaves the battlefield, return the exiled card to your graveyard".
Resolve the Moorland Rescuer trigger, returning nothing from your graveyard to the battlefield.
Activate Phyrexian Altar by sacrificing the Moorland Rescuer token, adding one mana of any color.
The Moorland Rescuer token dies, triggering itself twice.
Resolve the Moorland Rescuer token's trigger granted by Hofri Ghostforge, returning Moorland Rescuer from exile to your graveyard.
Resolve the other Moorland Rescuer trigger, returning Moorland Rescuer from your graveyard to the battlefield.
Repeat.

Infinite colored mana

Phyrexian Altar

Cast Moorland Rescuer by paying {5}{W}.
Moorland Rescuer enters the battlefield and triggers Molten Echoes, creating a token copy of Moorland Rescuer with haste.
Activate Goblin Bombardment by sacrificing the nontoken Moorland Rescuer.
The nontoken Moorland Rescuer dies, triggering itself.
In response, activate Goblin Bombardment by sacrificing the token Moorland Rescuer.
The token Moorland Rescuer dies, triggering itself, returning the nontoken Moorland Rescuer from your graveyard to the battlefield.
Molten Echoes triggers again, creating a token copy of Moorland Rescuer with haste.
Resolve a Goblin Bombardment ability, dealing 1 damage to any target.
Resolve the remaining Moorland Rescuer trigger, returning any number of creature cards with total power 4 or less from your graveyard to the battlefield and failing to exile the Moorland Rescuer which has left the graveyard.
Resolve the remaining Goblin Bombardment ability, dealing 1 damage to any target.
Repeat from step 3.

Infinite blinking of some creature cards in your graveyard

Molten Echoes

Cast Dance of Many by paying {U}{U}.
Dance of Many enters the battlefield, creating a token copy of Moorland Rescuer.
Activate Altar of Dementia by sacrificing the Moorland Rescuer token.
The Moorland Rescuer token dies, triggering itself and Dance of Many.
Resolve Dance of Many's trigger, sacrificing it.
Dance of Many leaves the battlefield, exiling nothing.
Activate Altar of Dementia by sacrificing Archon of Falling Stars.
Archon of Falling Stars dies, returning Dance of Many to the battlefield.
Dance of Many enters the battlefield, creating another token copy of Moorland Rescuer.
Let one Altar of Dementia trigger resolve, causing a player to mill four cards.
Let the Moorland Rescuer token's trigger from step 4 resolve, returning Archon of Falling Stars to the battlefield.
Let the remaining Altar of Dementia trigger resolve, causing the targeted player to mill four cards.
Repeat from step 2.

Combos with "Moorland Rescuer"