Activate up to five lands you control by tapping them, adding at least 4.
Cast Imps' Taunt with buyback by paying 4, targeting Peregrine Drake.
Orvar's first ability triggers, creating a token copy of Peregrine Drake.
When the Peregrine Drake token enters the battlefield, it triggers, untapping up to five lands.
Resolve Imps' Taunt, returning it to your hand.
Repeat.
This clever loop turns a seemingly innocuous draft common into an engine of limitless replication. By casting Imps' Taunt targeting Peregrine Drake and paying its buyback cost, you ensure the spell safely returns to your hand while triggering Orvar, the All-Form to churn out a fresh copy of the Drake. Every time that Peregrine Drake token enters the battlefield, its triggered ability untaps your lands to refund the mana needed to keep the cycle going.