how many counters

[imFourth of Phils]

i have in field, {Hardened Scales}
{Retreat to Kazandu}
{Undergrowth Champion}

then i play a land, how many counters the champion will get? im not sure but i guess its 4

[imFourth of Phils]

Undergrowth champion's ability triggers, hardened scales replaces the one it would get with an additional

Retreat's ability triggers, hardened scales replaces the one it would get with an additional

It's two separate abilities being looked at, so each one can be affected by a replacement affect, meaning a total of 4 counters would be placed on him, two coming from each source

thank you