This Arlinn can also transform into Arlinn, the Moon's Fury, a beefy Werewolf creature that helps you ramp with red and green mana
At launch, over 200 game cards will be available in various products including starter decks, booster packs, a gift set, and the Illumineers Trove. There will be three different Starter decks available at launch, each with a specific list of 60 cards in two of the six inks which include Amber and Amethyst, Emerald and Ruby, or Steel and Sapphire
That includes Treasure tokens, and they can't sac it in response of you casting Cavern-Hoard Dragon
After that you can flicker it it comes back as a creature and its enters ability triggers again
Its a design space that hasnt been explored all that much, and I think Toph immediately asserts herself as the best land creature Commander