If a creature you control would enter the battlefield with a number of +1/+1 counters on it, it enters with that many plus one instead.

If two or more effects attempt to modify how many counters would be put on a creature you control, you choose the order to apply those effects, no matter who controls the sources of those effects.

Each additional Hardened Scales you control will increase the number of +1/+1 counters placed on a creature you control by one.