Since it enables so many things, it is likely to play a key role in many standard decks throughout its life time, earning it a spot in the A tier
The lesser-used categories among trainer cards are as follows: Technical Machine: these cards work similar to items or Pokmon Tools, but instead, they list an attack, giving them a similar feature to what they have in the video games
As a result, Mage-Ring Network occasionally lets us cast Linvala, the Preserver or Emeria Shepherd a turn or two early, and in the worst case, it allows us to have really explosive turns in the late game, where we can play Tragic Arrogance and follow up the wrath by casting multiple creatures, thanks to the storage counter mana
This limited reach is one of the main reasons why Korean cards are generally cheaper than Japanese ones, despite being official and fully playable
Selfless Safewright could make a case for being more offensive and counting as a creature, but it also costs one more, and the reality is, you want both options in your go wide decks