Ayula, Queen Among Bears, Sekki, Seasons' Guide, and Leyline of Transformation

Prerequisites

• Ayula, Queen Among Bears on the battlefield
• Sekki, Seasons' Guide in hand
• Leyline of Transformation on the battlefield
• available

Steps

1. Cast Sekki by paying
2. Sekki enters the battlefield as a Bear due to Leyline of Transformation
3. Ayula triggers, causing Sekki to fight a creature you don't control
4. Sekki removes a number of +1/+1 counters from it equal to the damage it would've been dealt and creates that many 1/1 Spirit creature tokens, which are Bears due to Leyline of Transformation
5. When the Spirit Bear(s) enter the battlefield, Ayula triggers that many times
6. If Sekki is on the battlefield, resolve an Ayula trigger, causing Sekki to fight a creature you don't control, and then repeat from step 3
7. If Sekki is not on the battlefield, activate Sekki by sacrificing eight Spirits, returning it from your graveyard to the battlefield as a Bear with eight +1/+1 counters on it due to Leyline of Transformation
8. If Sekki entered the battlefield, Ayula triggers, causing Sekki to fight a creature you don't control
9. Repeat from step 3

Results

• Destroy all creatures opponents control whenever a creature enters the battlefield under your control
• Lock