This is almost exclusively only good with tokens
Where Swords to Plowshares represented the exiled creature going off to be a farmer, Marriage of Convenience would've represented the exiled creature getting married off
But they have been known to share that bounty around a little, and even within those colors, the idea of returning a card from graveyard to play has a staggering amount of depth
That being said, an additional three mana to flash this card back from your graveyard is a lot to ask for most aggressive strategies that want a keyword like haste
Generally speaking, this should still be a fairly good standard for which cards are the most collectible in the set, even with some ups and downs
For one, it's the first to name check a specific character, that being the tentacled sea-witch herself, who's been freed from imprisonment and is wreaking her usual havoc upon Lorcana