MTG >Combos >Hardened Scales +Sage of Hours +Bone Sabres +

You need to have

Hardened Scales

and

Sage of Hours

equipped with

Bone Sabres

on the battlefield, when attacking with

Sage of Hours

put 4 counters on it from

Bone Sabres

and one more from

Hardened Scales

. At the end of combat remove 5 +1/+1 counters and gain an extra turn. On the next turn repeat.