Step 1. Normal Summon Fluffal Dog, adding Fluffal Cat to your hand
Step 2. Activate Frightfur Patchwork, adding Polymerization and Edge Imp Scissors to your hand
Step 3. Activate Polymerization, sending Fluffal Cat and Edge Imp Scissors to the graveyard to Fusion Summon Frightfur Kraken
Step 4. Using Fluffal Cat's effect, add the Polymerization in the graveyard to your hand
Step 5. Activate Polymerization again, sending Fluffal Dog and Frightfur Kraken to the Graveyard to Fusion Summon Frightfur Sabre-Tooth
Step 6. Using Frightfur Sabre-Tooth's effect, Special Summon Frightfur Kraken from the Graveyard