Or rather, Convulsion of Natureitself does nothing by itself
When your opponent activates a monster effect, while they control more cards than you do: Special Summon 1 "Red Dragon Archfiend" or "Hot Red Dragon Archfiend" from your Extra Deck or GY, and if you do, negate that effect, and if you do that, destroy that card
Direct subs are often a bit faster (especially if your group needs to ship your cardsmail time is doubled) Some people just dont want any extra handoffs or exchanges, since it introduces more possibility for damage, loss, etc
$0.35 Garrison Cat Ikoria: Lair of Behemoths $0.35 Felidar Savior Foundations $0.49 Claws Out Foundations $2.49 Feline Sovereign Core Set 2021 $5.99 Pride Sovereign Hour of Devastation $1.29 King of the Pride Modern Horizons $0.35 Prideful Parent Foundations $0.39 Helpful Hunter Foundations $0.59 Pridemalkin Core Set 2021 $0.35 Sanctuary Cat Dark Ascension $0.35 Charmed Stray War of the Spark $0.35 Cat Collector Foundations 0 results found
With just those creatures and their tokens in play, wed suddenly have 39 flying power on the battlefield after the ultimate