Open this page Pokemon Card Creator Pokemon Card Creator Better fit when you want deeper editing and more creative control
So, provided you have two creatures with Undying in play, you can create an infinite loop

Provided Decklist: Monsters: 21 | Ultimate Conductor Tyranno || Yuanba, Abyssal Ryu-Ge of Serpentfall || Baba, Champion Ryu-Ge of Wyrmhaze || Kuaiba, Rugged Ryu-Ge of Dinocrag | Water Dragon Cluster | True King Bahrastos, the Fathomer || Water Dragon | Overtex Qoatlus | Dinomight Knight, the True Dracofighter ||| Duoterion | Oxygeddon | Hydrogeddon ||| Guangba, Luminous Ryu-Ge of Starforge Spells: 16 || Double Evolution Pill ||| Fossil Dig | Terraforming | Bonding D2O ||| Ryu-Ge World Creation | Ryu-Ge Ascension Gate of Serpentfall | Ryu-Ge Ascension Gate of Wyrmhaze | Ryu-Ge Ascension Gate of Dinocrag ||| Ryu-Ge Ascension Crest of Transmigration Traps: 5 ||| Bonding DHO | Ryu-Ge Eternal Recurrence of Trailokya | True Kings Return Extra Deck: | Number 77: The Seven Sins | Divine Arsenal AA-ZEUS Sky Thunder | Super Starslayer TY-PHON Sky Crisis | Superdreadnought Rail Cannon Juggernaut Liebe | Number 84: Pain Gainer | Galaxy-Eyes Cipher X Dragon | Superdreadnought Rail Cannon Gustav Max || Varudras, the Final Bringer of the End Times | Number 35: Ravenous Tarantula | Galaxy-Eyes Cipher Blade Dragon | Galaxy-Eyes Cipher Dragon | Valiant Shark Lancer | World Gears of Theurlogical Demiurgy | S:P Little Knight Note: This is continuing the style of Creative Deck Profile articles, designed to showcase a build through replays and an attached summary

Arena began in 2017 with a Standardonly environment, and while the Historic format expands the collection, it is still missing thousands of Commander staples
Specifically, Arthur pairs really well with Madam Mim Purple Dragon and various Merlin cards
It is a white/green character. He continued: This character is doing something new