The Legacy of Takahashi Kazukis Yu-Gi-Oh Manga Anime Economy World Yu-Gi-Oh got its start in 1996 as a manga series, but took on an extended life as a trading card game, televised anime programs, a series of films, and much more
Dex 22 Cards Most Expensive Malamar $26.14 Malamar EX $22.80 Malamar VMAX $12.10 Distribution by Rarity
I think paying 4 mana instead of 3 is a big difference and the whopping 7 mana eternalize ability doesn't make up for it
Thunder Dragon cannot effectively break a full Gouki board going second
EDHREC players, for example, run this pretty frequently in Tinybones, Trinket Thief, Tinybones, Bauble Burglar, and Tergrid, God of Fright, all commanders that excel leading decks that aim to whittle opponents down to zero resources as soon as possible