The second category are rare because there really were only a few copies of them ever printed
A more likely tier home for Venerated Rotpriest is in Infect
The elemental frames return for the One With The Elements lair

Lost in the Spirit World The Spirit Oasis Thriving Isle 6 Island [QMIWFqwRUK1NLBxjbbXXL] Island Appa [5qtAqNeW80BB7BCgfUsB1S] 0017_MTGTLA_JSTheme: Underwater Jumpstart Theme Card Flying Dolphin-Fish Invasion Submersible Rowdy Snowballers Turtle-Seals Tui and La, Moon and Ocean Giant Koi Serpent of the Pass Unagi's Spray Octopus Form Honest Work Coastal Piracy White Lotus Hideout Thriving Isle 6 Island [QMIWFqwRUK1NLBxjbbXXL] Island Appa [5qtAqNeW80BB7BCgfUsB1S] 0010_MTGTLA_JSTheme: Adaptive Jumpstart Theme Card Glider Kids Kyoshi Battle Fan Rowdy Snowballers Katara, Bending Prodigy Princess Yue The Blue Spirit Teo, Spirited Glider Giant Koi Boomerang Basics Frantic Search Lost in the Spirit World Waterbending Lesson Thriving Isle 6 Island [QMIWFqwRUK1NLBxjbbXXL] Island Appa [5qtAqNeW80BB7BCgfUsB1S] 0018_MTGTLA_JSTheme: Wise Jumpstart Theme Card Gran-Gran Forecasting Fortune Teller Otter-Penguin Katara, Bending Prodigy Rowdy Snowballers Messenger Hawk Turtle-Seals Consider Waterbender's Restoration Waterbending Lesson Coastal Piracy Whirlwind Technique Thriving Isle 6 Island [QMIWFqwRUK1NLBxjbbXXL] Island Appa [5qtAqNeW80BB7BCgfUsB1S] 0018_MTGTLA_JSTheme: Wise Jumpstart Theme Card Tiger-Seal Otter-Penguin Knowledge Seeker Sokka, Lateral Strategist Rowdy Snowballers Messenger Hawk Turtle-Seals The Blue Spirit Consider It'll Quench Ya

But what it really says in a lot of cases is, "The first time you cast this spell, draw another, more expensive copy of this card." They are all sneakily drawing you a card
Commander: Commander is the format most new and casual players are familiar with