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This is a lot of value for a single, fairly low cost, card to provide

While many party cards incentivize you to have a 'full party' (at least one of each type), some payoffs work generically with any of the individual party types

It can be a good gateway to the Commander format if they want to focus a deck around a specific legendary card

The mana value of a melded permanent is the sum of the mana values of its front faces

Any continuous effects with a "for as long as" duration, such as that of Vodalian Mindsinger, ignore phased-out objects

Victor, Valgavoths Seneschal Victor, Valgavoth's Seneschal is bonkers in Yorion, Sky Nomad decks where you get to blink a lot of enchantments at once