This was an idea for a field spell I came up with to make Mecha Phantom Beasts more consistent and easier to manipulate in their levels
Mecha Phantom Beast Great Airship
Spell - Field
Once per turn during either players turn. except during the damage step, when a "Mecha Phantom Beast" monster is summoned to your field, you can Special Summon 1 "Mecha Phantom Beast Token" (Machine-Type/WIND/Level 3/ATK:0/DEF:0). While you control a "Mecha Phantom Beast Token" your opponent cannot target "Mecha Phantom Beast" cards you control with card effects. If you would summon a monster using a monster(s) on your field with a level different than their original level, you can treat that monster(s) level as any level from their original level to their current level. You can only summon a monster using this effect once per turn.