The fact that you can play the exiled cards as long as you control Lightning is a nice bonus, but the lack of Haste here really kills the card, in my opinion
The resulting mutated creature has the stats of the creature you chose to remain on top, and the abilities of both creatures
You can also sacrifice Knights of San d'Oria/Ranger-Captain of Eos to prevent your opponents from casting noncreature spells on this turn
[8] Some example locations are Forbidden Mountain from Sleeping Beauty , McDuck Manor from Duck Tales , or The Sorcerers Tower from Fantasia
During real world games Ive been accused of getting too attached to my creatures, and this sentimentality is dialed up to the maximum in MtG: Arena
Unfortunately, this is another one that is a retro frame only