Rise of the Floodborn Starter Deck Amethyst & Steel Amethyst is one of the strongest inks right now and this starter deck has format staples that nearly every Amethyst deck wants: 002-052-merlin-rabbit, 002-051-merlin-goat, and 002-046-madam-mim-fox
Swerve through three planes of mayhem, dodging dangerous obstacles and rival racers along the way
As such, you can cast one side first, and later unlock the other side (the other door)
For example, starting with a two-drop Ichor Wellspring you can get a three-drop like Chromatic Lantern if you need to smooth your mana or a combo piece like Ashnod's Altar or Phyrexian Altar or Crucible of Worlds
Elusive Otter The Elusive Otters Instant side is a situational albeit flexible buff to creatures in a +1/+1 counter strategy, but its the combination of prowess and being situationally unblockable that really makes it shine
(At the beginning of its controller's upkeep, that player puts an age counter on it, then sacrifices it unless they pay its upkeep cost for each age counter on it.) Enchantment Sheoldred, Whispering One Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.) At the beginning of your upkeep, return target creature card from your graveyard to the battlefield