The mana value of the spell remains unchanged, no matter what the total cost to cast it was and no matter whether an alternative cost was paid
The previous page shows what a two-player game might look like after a few turns

Release date: 2022-10-18 Prowl, Pursuit Vehicle Prowl, Stoic Strategist Ratchet, Field Medic Ratchet, Rescue Racer Jetfire, Air Guardian Jetfire, Ingenious Scientist Blitzwing, Adaptive Assailant Blitzwing, Cruel Tormentor Starscream, Power Hungry Starscream, Seeker Leader Slicer, High-Speed Antagonist Slicer, Hired Muscle Arcee, Acrobatic Coupe Arcee, Sharpshooter Blaster, Combat DJ Blaster, Morale Booster Cyclonus, Cybertronian Fighter Cyclonus, the Saboteur Flamewar, Brash Veteran Flamewar, Streetwise Operative Goldbug, Humanity's Ally Goldbug, Scrappy Scout Megatron, Destructive Force Megatron, Tyrant Optimus Prime, Autobot Leader Optimus Prime, Hero Soundwave, Sonic Spy Soundwave, Superior Captain Ultra Magnus, Armored Carrier Ultra Magnus, Tactician Prowl, Pursuit Vehicle Prowl, Stoic Strategist Ratchet, Field Medic Ratchet, Rescue Racer Jetfire, Air Guardian Jetfire, Ingenious Scientist Blitzwing, Adaptive Assailant Blitzwing, Cruel Tormentor Starscream, Power Hungry Starscream, Seeker Leader Slicer, High-Speed Antagonist Slicer, Hired Muscle Blaster, Combat DJ Blaster, Morale Booster Cyclonus, Cybertronian Fighter Cyclonus, the Saboteur Flamewar, Brash Veteran Flamewar, Streetwise Operative Goldbug, Humanity's Ally Goldbug, Scrappy Scout Megatron, Destructive Force Megatron, Tyrant Optimus Prime, Autobot Leader Optimus Prime, Hero Soundwave, Sonic Spy Soundwave, Superior Captain Ultra Magnus, Armored Carrier Ultra Magnus, Tactician

Deep Gnome Terramancer I like Deep Gnome Terramancer a lot because it's a creature with a static ability
It only considers cards that copy spells on the stack or make copies to cast