While the general consensus is that it's fine as it is because mana production of this sort is a green mechanic, some people are still sold on the fact that it makes mana based on the number of enchantments out on your side, which has been done by Serra's Sanctum back in the Urza's Saga expansion
*Some FOIL cards are available, if you'd like foils add a note when you place your order and we will include as many as possible, but there are no guarantees.*
Those rights belong to Middle Earth Enterprises, a subsidiary of Embracer Group
Theyre also the easiest to find in booster packs (being, as the name suggests, the most common type of card)
Koma, Cosmos Serpent: Making strong tokens each upkeep, while being difficult to destroy is why Koma is one of the iconic cards from Kaldheim
At casual tables, however, it might actually be too good