Mana Short [Unlimited Edition] Lightning [+10] Set: Collectors' Edition Type: Enchantment

Set: Collectors' Edition Type: Enchantment Rarity: Rare Cost: {R}{R} Whenever one or more creatures you control attack

Set: Secret Lair Drop Series Type: Creature — Sliver Rarity: Rare Cost: {4}{U} Whenever a Sliver deals combat damage to a player

where X is the mana value of a commander you own on the battlefield or in the command zone

Set: Ikoria: Lair of Behemoths Promos Type: Land — Swamp Forest Island Rarity: Rare ({T}: Add {B}

Mana Short [Unlimited Edition] Lightning [+10] Set: Collectors' Edition Type: EnchantmentSet: Unlimited Edition Type: Instant Rarity: Rare Cost: {2}{U} Tap all lands target player controls and that player loses all unspent mana.