2 Apophis Swarming The Field With Trap Monsters The Apophis cards are an archetype of Traps that turn into monsters when they are activated
you take no battle damage from battles involving your declared Normal Monsters or your "Primite" monsters (for the rest of this turn), then if you control no monsters, you can Special Summon 1 declared Normal Monster from your Deck or GY
Most early-curve filler characters are Common
In particular, ZS - Ascended Sage is a great opener for this deck, as it can be Special Summoned if the player has nothing in play
For the rest of our army, cheaper bodies are generally better but its also potentially worth overpaying for a creature with combat keywords or other impactful utility
The effect is optional as well, so if you don't have any combos to create with Cloudstone Curio's effect you can opt to not use it