Like most Magic: The Gathering cards, the value of Summon: Good King Mog XII depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Final Fantasy Commander)
Like so many colourless and EtB tapped lands I am happy enough playing one of these without other colourless and tapped lands
Any power- or toughness-setting effects that start to apply after Zoetic Glyph becomes attached to the artifact will overwrite this effect
The abilities work well with a ton of different commanders, including the sweet seven-drop that I haven't mentioned yet, Myrkul, Lord of BonesMyrkul, Lord of Bones, as well as Jodah, the UnifierJodah, the Unifier, and Saskia the UnyieldingSaskia the Unyielding, an aggro queen who makes the most out of the Thalia, Heretic CatharThalia, Heretic Cathar ability
Theres not really anything here that breaks most social norms of Commander