Both Priest and Pyroclasm are specific strategy hoser cards and while in some metas they are entirely maindeckable I do consider them more as sideboard cards at heart
Triggered abilities use the word "when," "whenever," or "at." They're often written as "[Trigger condition], [effect]." Some keywords (such as prowess) are triggered abilities and will use "when," "whenever," or "at" in their reminder text
If an Adventure spell leaves the stack in any way other than resolving (most likely by being countered or by failing to resolve because its targets have all become illegal), that card won't be exiled and the spell's controller won't be able to cast it as a permanent later
Dimir Spybug is one of those cards
Inkshield was first released in the 2021 Commander precons as a tribute to Menerys own signature Commander deck, You Did This to Yourself, referenced in the new cards flavour text
It's creatures-only, which is a lot worse than Teferi's Protection, but I think that's a Mount-Everest-level hill to climb and it's still a great choice
