Its dredge ability lets you return it to hand in exchange for some milling, which should let you put more counters on it when you next cast or cheat it in
Effects that care about cards only care about cards in the sense of: This thing was in your starting deck. No matter how many Gold and Treasure token artifacts you sacrifice, they won't count towards transforming The Everflowing Well the Well wants cards in your graveyard
Evolving Skies Pokemon cards can be a solid investment, especially rare cards in mint condition
Share (+holo) Fan of Waves Fog Crystal (+holo) Great Ball Klara Korrina's Focus Level Ball (+holo) Marnie (+holo) Melony Metal Saucer (+holo) Nessa (+holo) Ordinary Rod (+holo) Path to the Peak (+holo) Peonia (+holo) Phoebe Professor's Research (+holo) Quick Ball (+holo) Raihan (+holo) Rare Candy (+holo) Rescue Carrier Scoop Up Net (+holo) Stormy Mountains (+holo) Switch (+holo) Tool Jammer Tower of Darkness Tower of Waters Turbo Patch (+holo) Urn of Vitality Zinnia's Resolve (+holo) Aurora Energy (+holo) Capture Energy (+holo) Impact Energy (+holo) Rapid Strike Energy (+holo) Single Strike Energy (+holo) Spiral Energy Twin Energy (+holo) Grass Energy (+holo) Fire Energy (+holo) Water Energy (+holo) Lightning Energy (+holo) Psychic Energy (+holo) Fighting Energy (+holo) Darkness Energy (+holo) Metal Energy (+holo) More to come
Turn 2 Duress their Serum Visions
Mono-Red, in particular, does use a colourless mana source in Faceless Haven, which can transform into a 4/3 creature