Even at $4, I dont think this card is a bad buy if you need copies or expect to require them in the future
Of course, it doesnt prevent any damage to itself, which is a bummer, but the ability to slap this card down and then play a Star of Extinction with a full board putting 20 +1/+1 counters on all of your creatures (except for Vigor) is a play that will likely cause your foe to concede on the spot
Let me know in the comments or on our official Draftsim Discord
Even if your opponents are able to get rid of Flynn in a single challenge, its still going to cost them a card - and if they hesitate, you might be gaining two lore each turn
From a flavor standpoint, this set feels cohesive and intentional
Seedborn Muse is a five-mana 2/4 that allows you to untap all permanents you control during each other players untap step