Roar of the Fifth People's second chapter ability doesn't have a duration
If you do, it becomes a mutating creature spell and targets a non-Human creature with the same owner as this spell. Casting a spell using its mutate ability follows the rules for paying alternative costs (see 601.2b and 601.2fh)
Smee, Loyal First Mate Common 16 Prince Phillip, Dragonslayer Uncommon 17 Pumbaa, Friendly Warthog Common 18 Rapunzel, Gifted with Healing Legendary 19 Sebastian, Court Composer Common 20 Simba, Protective Cub Common 21 Stitch, Carefree Surfer Legendary 22 Stitch, New Dog Common 23 Stitch, Rock Star Super Rare 24 Timon, Grub Rustler Common 25 Be Our Guest Uncommon 26 Control Your Temper
Other color combinations at least benefit from the hybrid mana costs which appear across the set, reducing the rate of unplayable draws