Hey there. This is actually a mistranslation by yugipedia. The Japanese text says "この効果で特殊召喚したモンスターは自分 エンドフェイズに持ち主の手札に戻る。
This actually means “your” End Phase. I have corrected this on yugipedia. Remember that the English translations are done by fans on yugipedia. The card hasn’t been printed in English yet. The script is correct and works how it is supposed to.