The entire cycle of God-Eternal cards is awesome because they all have relevant and efficient bodies and abilities for the mana cost but the immortality mechanic that each has is particularly impressive in Commander since not even exile effects will permanently get rid of them
That said, Kalain, Reclusive Painter still has a great effect if you build around this Treasure commander
Please refer to the FINAL FANTASY Trading Card Game announcement about opportunities to receive these promo cards
In an aggro deck, you can play Prince Eric as a lore generator and just force your opponent to deal with him, knowing that when they do you get to banish something of theirs
For two mana, you get to grab a creature from the top five cards of your deck, exiling it, and letting you cast it this turn
Decks feature new legendary creatures, new-to- Magic cards, and reprints