It can be any Energy and any Pokmon, regardless of their type, which is quite nice because a lot of similar cards from the past restricted what type of Energy you could attach or what type of Pokmon you could attach it to
Even if you crew the creature that won't change it's power and toughness
Built for both play and display, each version is curated to feel premium from the first reveal to the final turn

Take a look at the entire Commander deck below: Creatures (28) 1 Solemn Simulacrum 1 Hanna, Ship's Navigator 1 Vedalken Engineer 1 Silver Myr 1 Gold Myr 1 Etherium Sculptor 1 Master of Etherium 1 Indomitable Archangel 1 Myrsmith 1 Riddlesmith 1 Shimmer Myr 1 Whirler Rogue 1 Cataclysmic Gearhulk 1 Foundry Inspector 1 Sram, Senior Edificer 1 Aeronaut Admiral 1 Teshar, Ancestor's Apostle 1 Raff Capashen, Ship's Mage 1 Sai, Master Thopterist 1 Arcanist's Owl 1 Emry, Lurker of the Loch 1 Kotori, Pilot Prodigy 1 Research Thief 1 Katsumasa, the Animator 1 Kappa Cannoneer 1 Cyberdrive Awakener 1 Drumbellower 1 Ironsoul Enforcer Planeswalkers (1) Lands (37) Spells (34) 1 Swords to Plowshares 1 Sol Ring 1 Fellwar Stone 1 Thoughtcast 1 Azorius Signet 1 Dispatch 1 Reality Shift 1 Thopter Spy Network 1 Skysovereign, Consul Flagship 1 Smuggler's Copter 1 Cultivator's Caravan 1 Peacewalker Colossus 1 Mirage Mirror 1 Weatherlight 1 Crush Contraband 1 Parhelion II 1 Generous Gift 1 Arcane Signet 1 Dance of the Manse 1 Armed and Armored 1 Raiders' Karve 1 Colossal Plow 1 Surgehacker Mech 1 Prodigy's Prototype 1 Mobilizer Mech 1 Imperial Recovery Unit 1 Organic Extinction 1 Aerial Surveyor 1 Universal Surveillance 1 Shorikai, Genesis Engine 1 Imposter Mech 1 Access Denied 1 Swift Reconfiguration 1 Release to Memory What do you think of the Power Up deck and Shorikai, Genesis Engine

Azorius Control, and Bring to Light Scapeshift are some of the notable decks that can afford to play Chalice in the main deck, but many more decks will have access to it after game one