Answered Phoenix upgrade

[HappyRose]

I have an Aureate Phoenix evolved to level 10, and very happy with the effect of pet food on production.
It is going to cost me 16 tiles to take it from level III to level IV
What benefits are there to upgrading?
Thanks
HappyRose

 

[DeletedUser8921]

You can see the benefits in the upgrade screen. Upgrading will increase the population, culture, supplies and gold, but will not give you additional rune shards or spells and will not increase the feeding effect.

 

[HappyRose]

Thanks Crowella.... mostly use my ipad and you can not see that information on the upgrade screen hence the question, have switched to the laptop, bingo