A regenerated creature keeps all its enchantments on it, so Molting Snakeskin remains useful as long as you can pay for the ability
Here's an easy example: the ancillary card slot could contain a very expensive Arcane Signet or a just-as-expensive Chulane, Teller of Tales, or it could contain a common gain land like Thornwood Falls
Caustic Caterpillar Conclave Naturalists Dwynen's Elite Dwynen, Gilt-Leaf Daen Elvish Visionary Gaea's Revenge Herald of the Pantheon Hitchclaw Recluse Honored Hierarch Leaf Gilder Llanowar Empath Managorger Hydra Nissa, Vastwood Seer Orchard Spirit Outland Colossus Pharika's Disciple Prized Unicorn Rhox Maulers Skysnare Spider Somberwald Alpha Sylvan Messenger Terra Stomper Timberpack Wolf Undercity Troll Valeron Wardens Vastwood Gorger Woodland Bellower Yeva's Forcemage
Unsurprisingly with the very limited scope of a one mana casting cost the various contenders will all be fairly similar
This week, I showcase my latest creation
This guide will help you with the best of them, blue, but the world is your oyster
