Look no further than the Lorcana Gateway, a tutorial and mini-adventure tucked inside a single game
Thats a seriously good ability on a card costing just three ink - and if you include the full four copies of Jasper, Common Crook in your deck, you could find yourself able to shut down your opponents entire field of characters
Squall, SeeD Mercenary Squall, SeeD Mercenary does some really cool stuff
Keep him in hand for a surprise attack, or for Ink when youre on the defense
If Sandworm's last ability resolves but doesn't destroy the target land (probably because the land had indestructible), the target land's controller still gets to search for a basic land card
Because they have to belong to specific decks, and because they play the same as regular cards, they can come across as unnecessary right now - except to those hunting for a hyper-specialized deck