They both start as 3/3s that get +1/+1 counters whenever you discard a card or draw a card, respectively
After Chanpheng received his card, Wizards of the Coast realized that they still had extra copies of it due to the run sheet including them, as well as printing plates for what was supposed to be a one-of-a-kind card
P/T Set Number 180 Language Deutsch Legal Formats Commander, Legacy, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Historic, Modern, Pauper, Pioneer, Standard, Timeless Rulings (4/29/2022) The damage dealt by the target Phoenix as Syrix's first triggered ability resolves is equal to its own power, not the power of the creature card that left the graveyard this turn
Shes a snow creature that creates a few cool infinite mana combos with cards such as: Simply tap Adarkar Valkyrie targeting Composite Golem