All of the cards players have been tempted to copy with Fable of the Mirror-Breaker are good targets here, and, unlike Reflection, Jaxis doesn't require a four-turn setup
If I can manage to meet that condition on other players' turns, that's a lot of Treasure tokens
Nevertheless, Jolteon is a remarkable card, even in this non-holofoil version (the holofoil is numbered at #4/64, while this is #20/64)

Abolisher of Bloodlines Abundant Maw All Is Dust Angelic Aberration Anticausal Vestige Artisan of Kozilek Aurora of Emrakul Azlask, the Swelling Scourge Bane of Bala Ged Barrage Tyrant Basking Broodscale Bearer of Silence Benthic Anomaly Benthic Infiltrator Birthing Hulk Bismuth Mindrender Blight Herder Blinding Drone Blisterpod Breaker of Armies Breaker of Creation Brisela, Voice of Nightmares Brood Butcher Brood Monitor Broodwarden Catacomb Sifter Chittering Dispatcher Chittering Host Conduit of Emrakul Conduit of Ruin Corrupted Shapeshifter Cryptic Cruiser Culling Drone Cultivator Drone Deathless Behemoth Deceiver of Form Decimator of the Provinces Deepfathom Skulker Depth Defiler Desolation Twin Devourer of Destiny Dimensional Infiltrator Distended Mindbender Dominator Drone Dread Defiler Dread Drone Dronepack Kindred Drowner of Hope Drowner of Truth Drownyard Behemoth Drownyard Lurker Dust Stalker Echoes of Eternity Elder Deep-Fiend Eldrazi Aggressor Eldrazi Conscription Eldrazi Devastator Eldrazi Displacer Eldrazi Linebreaker Eldrazi Mimic Eldrazi Obligator Eldrazi Ravager Eldrazi Repurposer Eldrazi Skyspawner Eldritch Immunity Emrakul's Hatcher Emrakul's Messenger Emrakul, the Aeons Torn Emrakul, the Promised End Emrakul, the World Anew Endbringer Endless One

Ive played for nearly 15 years, starting with the equivalent of kitchen tables in college, moving into competitive Standard and Extended around Lorwyn and Shards of Alara, and then ending up back at the kitchen tables afterward
Recursive Combat Damage Triggers From one spell that draws you a ton of cards in one hit to a combat trigger that spreads out over time and can draw you many