what permanent do you want to return to you hand with
Kor Skyfisher?
for me the slot of him could be filled much better by
Tilling Treefolk and
harrowalso
Gatecreeper Vine is not much more than a 2 mana
Terramorphic ExpanseI see that you play 3 colors and therefore need some "support" toget the right colors. however i would recommend playing evolving wilda and
Terramorphic Expanse over playing gates
i also would recommend playing 1 or 2
Boros Garrison for you absolut lategame --> when you only have one land in hand, so you can play this one land every turn and return it back to hand every turn
playing only 8 landfall creatures seems risky vs every controlldeck --> might want to add
Valakut Predatorand finaly
fling might be good too, probobly with
Zektar Shrine Expedition