It's certainly a powerful spell if you have other ways of dealing your opponents mill, or as I like to call it, "deck damage." You can pair this with cards like Deadly Cover-Up and Space-Time Anomaly, assuming you can survive to those turns in the game
Amulet of Vigor is the most efficient option, though it's also the priciest since it sees Modern play
Brawl Legal Vintage Legal Timeless Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Not Legal Toolbox Buy This Card Notes and Rules Information for Stormcatch Mentor: The cost reduction applies only to generic mana in the total cost of instant and sorcery spells you cast
Trynn produces Human tokens, so you can also include Thraben Doomsayer , Hanweir Militia Captain , and Westvale Abbey to support a token subtheme that also adds Humans to the board
Ragavan is the most highly-played creature from the set in both Commander and Constructed, and those serialized cards are available for around half the price of Jin-Gitaxias
Notably this combo includes a fourth non-human creature of your choice with toughness 2 or greater
