Moisture Creature!!

i would like to ask about "Moisture Creature"......
i can tribute summon him by offering 3 monsters on the field as it says.... or by offering 3 monsters on my side of the field??

i was having a duel and a guy told me that its effect is typed wrong....... so i would like to see if im going to keep it in my deck!!

you can only tribute monsters that you control unless the card specifically states you can use your opponent's monsters.