Kroxa, Titan of Death's Hunger (Serialized) [Multiverse Legends] Tribal Sorcery Lieutenant — At the beginning

Lieutenant — At the beginning of combat on your turn

Set: March of the Machine Prerelease Promos Type: Legendary Planeswalker — Wrenn Rarity: Mythic Cost: {1}{G}{G} Lands you control have “{T}: Add one mana of any color

Whenever equipped creature attacks alone

Set: Outlaws of Thunder Junction Type: Creature — Dragon Rarity: Mythic Cost: {3}{R}{R} Flying

Or just look up a calculator online

Kroxa, Titan of Death's Hunger (Serialized) [Multiverse Legends] Tribal Sorcery Lieutenant — At the beginningSet: Multiverse Legends Type: Legendary Creature Elder Giant Rarity: Mythic Cost: {B}{R} When Kroxa enters the battlefield, sacrifice it unless it escaped. Whenever Kroxa enters the battlefield or attacks, each opponent discards a card, then each opponent who didn't discard a nonland card this way loses 3 life. Escape{B}{B}{R}{R}, Exile five other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)