OTK board

Step 1. Normal Summon Superheavy Samurai Soulpiercer
Step 2. Link Summon Superheavy Samurai Scarecrow using Superheavy Samurai Soulpiercer as material
Step 3. Activate Superheavy Samurai Soulpiercer's effect, add either Superheavy Samurai Soulcannon (if your opponent doesn't have a monster on his field) or Superheavy Samurai Soulbuster Gauntlet (if your opponent has a monster on his field)
Step 4. Activate Superheavy Samurai Scarecrow, discard Superheavy Samurai Big Benkei, then Special Summon it back
Step 5. Activate Superheavy Samurai Soulhorns' first effect, target Superheavy Samurai Big Benkei
Step 5a. If you added Superheavy Samurai Soulcannon, activate its first effect and target Superheavy Samurai Big Benkei