That card is the Special Illustration Rare variant of Iron Crown ex, the Future Paradox form of Cobalion
Deck 3: Bastion Misawa Style Litmus Doom Swordsman Deck 3 Litmus Doom Swordsman 2 Mathematician 2 Carboneddon 2 Hyozanryu 1 Djinn Demolisher of Rituals 3 Beast King Barbaros 2 King Beast Barbaros 3 Senju of the Ten Thousand Hands 2 Eldlich the Golden Lord 1 Flamvell Guard 3 Litmus Doom Ritual 3 Pre-Preparation of Rites 2 Ritual Cage 1 Foolish Burial 3 Skill Drain 2 Lose 1 Turn 1 Spirit Barrier 2 Call of the Haunted 2 Magic Cylinder 2 Herald of the Arc Light 1 Dingirsu, the Orcust of the Evening Star 1 Number 38: Hope Harbinger Dragon Titanic Galaxy 1 Number 62: Galaxy-Eyes Prime Photon Dragon 1 Galaxy-Eyes Full Armor Photon Dragon 1 Galaxy-Eyes Cipher Dragon 1 Galaxy-Eyes Cipher Blade Dragon 1 Alsei, the Sylvan High Protector 1 Number 97: Draglubion 1 Number 107: Galaxy-Eyes Tachyon Dragon 1 Number C107: Neo Galaxy-Eyes Tachyon Dragon 1 Black Luster Soldier Soldier of Chaos 1 Knightmare Phoenix 1 Knightmare Unicorn Deck Concept A Deck centered around the Litmus Doom Swordsman used by Bastion Misawa in the Yu-Gi-Oh
Yu-Gi-Oh cards are about 59 x 86 mm, while Pokemon cards are slightly larger, typically measuring 63 x 88 mm
That said, Hearth Elemental or more accurately the adventure on Hearth Elemental, Stoke Genius does quite a good Breakthrough impression
The deck revolves around taking advantage of mechanics allowing you to play cards from exile, triggering Prosper's Pact Boon effect to flood the board with treasure tokens
Rowan, Scion of War Rowan, Scion of War gives you a massive discount for spells you cast based on the amount of life you lost, and this card can be ridiculous at times
