Cavern of Souls [Zendikar Rising Expeditions] Avatar eight upgrade cards invite you

eight upgrade cards invite you to fine-tune how your droids operate in battle while two unit cards give you the chance to field them either as a full unit or a two-man strike team

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then roll a d20

They have "When this creature dies

while three command cards invite you to make him a central piece of your army's strategy

Cavern of Souls [Zendikar Rising Expeditions] Avatar eight upgrade cards invite youSet: Zendikar Rising Expeditions Type: Land Rarity: Mythic As Cavern of Souls enters the battlefield, choose a creature type. {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.