Stinging Study (Extended) [Commander 2021] Kaladesh Promos you can Special Summon 1

you can Special Summon 1 "Elemental Hero" monster from your Graveyard that was destroyed by battle

Set: Junior Series Europe Type: Creature — Elf Rarity: Rare Cost: {1}{G}{G} Other Elf creatures get +1/+1 and have forestwalk

Set: Eldritch Moon Promos Type: Enchantment Rarity: Rare Cost: {W} You may cast Aura and Equipment spells as though they had flash

Set: Happy Holidays Type: Enchantment Rarity: Mythic Cost: {B} {B}

where X is the number of artifacts you control

Stinging Study (Extended) [Commander 2021] Kaladesh Promos you can Special Summon 1Set: Commander 2021 Type: Instant Rarity: Rare Cost: {4}{B} You draw X cards and you lose X life, where X is the mana value of a commander you own on the battlefield or in the command zone.