Walking Ballista is the easiest payoff creature to disrupt, as the loop cannot proceed without first resolving Heliods activated ability or some similar lifelink-granting effect
This is where youll need to start making tweaks
Kona, Rescue Beastie Friendly, trusting, and keenly intelligent, Kona is unique amongst beasties in that she doesn't form attachments to individual survivors
If you dont need to stop a Swords to Plowshares thats targeting your commander, maybe that Negate can snag a Bolass Citadel or Teferis Protection instead
Archon of Absolution Archon of Coronation Archon of Cruelty Archon of Emeria Archon of Falling Stars Archon of Justice Archon of Redemption Archon of Sun's Grace Archon of Valor's Reach Archon of the Triumvirate Archon of the Wild Rose Ashen Rider Blazing Archon Celestial Archon Ezrim, Agency Chief Guardian Archon Harmonious Archon Krond the Dawn-Clad Ornitharch Silent Sentinel Vengeful Archon
And if you can, give him evasion or make him unblockable