As long as you can meet those requirements, you can cast the spell again
Sproutback Trudge Green doesnt interact with lifegain much, but Sproutback Trudge looks like a compelling reason to consider cards like Weather the Storm and Essence Warden
(It can't be blocked except by artifact creatures and/or creatures that share a color with it.) Whenever equipped creature attacks, until the end of defending player's next turn, that player gets two rad counters whenever they cast a spell
The activated ability offers a decent chunk of card advantage since milling can be akin to drawing a card in the right deck, which this ought to be
In Part 1, I talked about the creation of the enchantment theme to capture the mood and tone of the set, and then talked about the many ways the design incorporated the enchantment themes, from the Room cards, to the eerie ability word, to the rare cycle of impending creatures, to the Glimmer enchantment creature tokens, and beyond