If you'd bothered to pay attention to the tutorial messages, you'd understand that what you're asking for is already exactly how it works. Upgrading spells, acquiring assistants, performing rituals, and purchasing passives all contribute to how swiftly you can clear a field. By endgame, you can absolutely destroy even the final field in a matter of seconds.
The only thing you've done is waste your own time, sweetie - again, I'm not the dev. Just another player pointing out misinformation.
Going to go ahead and stop here - I can't tell if you're trolling, or genuinely arguing in bad faith, and I'm not interested in continuing to engage either way. Good luck with reading comprehension.