If a player cannot fulfill a storm marker requirement - say it calls for a spell and the player doesn't have one - does he have to stop his resolution phase and leave the marker in place, or can he discard the marker without turning in a spell and then attempt the adventure card tasks?
Also, if an adventure card has a penalty of discarding an item - say, an Elder Sign - and the player(s) doesn't have one, can he even attempt the adventure card?