D&D campaigns are (very often) all about powerful characters that take on evil doers to save the world, or at the very least a town or city, from destruction
Can Be Found In: Dark Beginning 1 (DB1-EN163), Metal Raiders (MRD-EN036), Structure Deck: Spellcaster's Judgment (SD6-EN005), Starter Deck 2006 (YSD-EN012), Champion Pack: Game Two (CP02-EN003), Battle Pack 2: War of the Giants (BP02-EN005), Starter Deck: Joey (SDJ-017), Dark Legends (DLG1-EN034), Retro Pack (RP01-EN033) Spell cards are usually the ones with the better outcomes
Serras Sanctum
For regular upgrades I highly recommend: Vito, Thorn of the Dusk Rose, Mondrak, Glory Dominus, Anointed Procession, Parallel Lives, Eerie Ultimatum, and you can also run the Cat Oven combo with Cauldron Familiar + Witch's Oven + Clock of Omens, and there's the Ballista Combo Heliod, Sun-Crowned + Walking Ballista, and finally the Exquisite Blood Combo since the deck already runs the other piece Sanguine Bond One Down, Three to Go
Unless your Bench is at max capacity, you can play as many Basic Pokmon from your hand to the Bench as you like during your turn