Card help

[RyomTheEpic]

Recently when opening a booster pack, I found a Hardened Scales. It's an enchantment and a rare, but I am confused on its ability.
It reads:
If one or more +1/+1 counters would be placed on a creature you control, that many plus one +1/+1 counters are to be placed on it instead.

Could someone explain what this means and when to use it?

Thanks

[mickeven]

{Hardened Scales} lets say you use the Outlast ability of {Disowned Ancestor}, it would get a +1/+1 counter from outlast and an extra +1/+1 counter because of Hardened Scales. If you had a card that gave your creature 3 +1/+1 counters, it would get 3 counters, plus the one extra from Hardened Scales

[redwolv]

It works really well with heroic tiggers. I have a GW budget deck that runs on this.

[RyomTheEpic]

{Skullbriar, the walking grabe}'s best friend

Thanks, and good luck in games to all!

[Wingnut]

{Skullbriar, the walking grabe}'s best friend

{Animar, Soul of Elements}, need I say more?

[Munchlax]

{Skullbriar, the walking grabe}'s best friend

{Animar, Soul of Elements}, need I say more?

Best card in mine

[particle]

{Skullbriar, the walking grabe}'s best friend

{Animar, Soul of Elements}, need I say more?

Best card in mine

Obvi {sage of hours} wrecks all

[Ekann1]

Guys, this is the help section, not the combo section

[Wingnut]

And giving examples as to where it is useful?