A mana value of 7 is brutal, but this card greatly ramps up your card advantage and has a place in slower formats like Commander
But you still need to find a way to draw some cards to actually damage your opponent or have a mana sink to use to convert your infinite mana into something useful, like Origin Spellbomb or Sunbeam Spellbomb, which you can use with Auriok Salvagers to bring back and sacrifice infinitely since you have infinite mana
Every time you cast an enchantment you create a legendary Frog token named Keimi if you dont already have one, who in turn has an ability that drains each opponent for one life when you cast an enchantment spell, healing you for each point of life you gain
Discard a nonland and that creature grows with a +1/+1 counter
For this reason, its hit pretty impressive heights
Its ability allowed players to retrieve two Item cards from their discard pile