Jaman : you said "to cards" while it should be "two cards".
Devon : You can't destroy cards in your opponent hand , replace it with "send to grave" , or " remove from play ". (Preferable)
Demonkl : Make the effect like this " When this card is banished from your deck, remove 1 card in your hand from play to special summon it. (Optional)
Riliana : Replace " destroy the defense position monster before damage calculation without applying flip effect " , to " When this card attacked a defense position monster destroy that monster without applying damage step". Also replace the last part after the last period with " During each of your End Phase send the top 4 cards of your deck to graveyard".
Homuslkl : Balanced , but make it "from grave" not from "your deck" because it gives the impression of overpowered card.