Thankfully you don't get Lost to Phyrexia's trigger twice because of how attack triggers work
Toph, Hardheaded Teacher and Toph, the First Metalbender both come with the ability to Earthbend things repeatedly, and that means its not very hard to have a snow Mountain thats a creature
Duelist Nexus Release Date: June 20, 2025 Details: A major core booster set introducing a new Synchro Summon mechanic and several new competitive archetypes
As Wanderwine Farewell is resolving, you'll create Merfolk tokens if you control a Merfolk kindred (or perhaps a kindred permanent with changeling), but Wanderwine Farewell won't count for itself, even though it is a Merfolk spell you control
Conclusion: Embrace the Power of Elf Commanders in MTG Elves have been a Commander staple since the format began, and thats not changing anytime soon