Dubious Challenge People on reddit are calling this a cheaper Tooth and Nail in a Roon deck which makes me question whether they read the card
Pairing this Gruul commander with cards like Reckless Impulse can net you up to three wolf tokens in a single turn if played correctly, and in a green deck, you should have no trouble generating the necessary mana for it
Cards like Plaguecrafter will help to keep your opponents boards and hands light, which will reduce their chances of being able to deal with your problems

Call Of Legends Theme Deck - "Retort" [Lucario] Flashfire Collector Pin 3 Pack Blister [Mega Lucario] Mega Lucario Collection Steam Siege Single Pack Blister [Lucario] $58.20 Crimson Invasion 3 Pack Blister [Lucario] $53.31 Lucario GX Box Knock Out Collection [Lucario, Bisharp, and Zoroark] $179.98 V Forces Tin [Lucario V] $51.17 Lucario #6Holo Rare $63.51 Lucario #2Rare $31.07 Lucario #61Uncommon $7.34 Lucario #2Rare $23.63 Lucario #53Uncommon $6.47 Lucario #12Promo $280.48 Lucario #19Rare $4.48 Lucario #14Holo Rare $13.83 Lucario #64Holo Rare $11.04 Lucario #80Holo Rare $18.13 Spiritomb - 039/063 #39Uncommon $0.12 Seedot #7Common $0.09 Volcanion #14Uncommon $0.08 Naclstack #35Common $0.09 Marshadow - 032/063 #32Uncommon $0.12 Thievul #42Common $0.09 Sandslash #21Common $0.12 Crawdaunt #37Uncommon $0.11 Lunatone #26Rare $0.28 Cinderace #17Rare $0.21
Charting the Spine of the World is best left to the disposable
The use of subtle light and shadow changes is done very well, and the crystal itself is fantastic