The options in Standard for nongreen decks are a bit limited, but there are some good ones: Arcane Signet was designed specifically with Brawl in mind and was put in the paper Brawl decks Wizards of the Coast published to support the format when it first came out
Interestingly, its origins start with Unglued
except with a different art, flavor text, and context "ancient" goes from "literally displaced in time" to "astonishingly old and hardy despite living in a river full of probably undead crocodiles." So that's the theory
You can find an Isshin, Two Heavens as One list for a little over $60
For us, it serves as an example for all those cards that people panic over when they first see it, but then turns out to be not as bad as they thought
Choose one - Sacrifice any number of creatures, then you gain 3 life for each sacrificed creature