Unyielding Swordsman

Stall {3}{r} (When this creature is blocked or blocking, you may pay the Stall cost any number of times. For each time the Stall cost was paid, put that many stall counters on this creature. Until there are 0 stall counters on this creature, both the attacker and the defender remain tapped and not attacking. At the beginning of your upkeep, remove a stall counter from this creature. When there are 0 stall counters on this creature, combat proceeds.)