Activate Goblin Bombardment by sacrificing Rendclaw Trow.
When Rendclaw Trow dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to Vizier of Remedies.
Resolve the Goblin Bombardment ability
Repeat.
This clever loop turns an ordinary Goblin Bombardment into a fatal firing squad by exploiting a neat arithmetic quirk: because Vizier of Remedies reduces the -1/-1 counters placed by Rendclaw Trow's persist mechanic from one to zero, the Trow never actually accumulates the counter it needs to stay dead. This means Rendclaw Trow can be sacrificed over and over again to Goblin Bombardment, returning endlessly to fuel an infinite loop of death triggers and lethal damage.