You can either cancel your subscription in-game by pressing the Premium Pass ticket which is at the very top of the home screen to the right of your profile picture or you can cancel via Google Play store settings
In your upkeep, you get one free impulse effect but cannot wait until a future turn to cast it, but you didn't spend any mana so you should have everything mana wise to cast it
This is the option I feel I need to test most
When Coralhelm Chronicler enters the battlefield, look at the top five cards of your library
Promotional cards : Cards distributed at events, through Nintendo promotions, or as exclusive prints
5 Ditto (Squirtle): Delta Species (Uncommon) $11.24 A Terrific Technicality While the Pokemon is technically a Ditto, this hysterical illustration of an imitated Squirtle is deserving of mention among the best Squirtle cards, and it has the sales to back up its inclusion