Since The Archimandrite's activated ability doesn't have a tap symbol in its cost, you can tap creatures that haven't been under your control since your most recent turn began (including The Archimandrite itself) to pay the cost
Like in all the Modern Horizons 2 elemental cycle, you can evoke it by pitching a black card to quickly disrupt an enemy without spending mana
The deck features a ton of different ramp spells to help do this: acceleration effects (Battery Bearer, Cradle Clearcutter), Land fetch effects (Bushwhack, Floriferous Vinewall), and spells that generate powerstone tokens (Geology Enthusiast, Argothian Opportunist, Stern Lesson)
Works on any device (PC/Mac/tablet/phone)
Just watch out for Bribery or reanimation spells, especially if youre playing a mono blue deck
By creating an apparent Snow-Man, these Goblins have given you a distraction