This charming loop turns simple spellcraft into a perpetual motion machine by slashing activation costs to the bone. With Training Grounds on the table, Emiel the Blessed's blink ability becomes remarkably cheap to run, requiring just a single mana to exile and return a target creature. Every cycle sees Wily Goblin reappear to drop a fresh Treasure token onto the battlefield, which you immediately crack for mana to fund the very next flick of Emiel's ability.