Syr Konrad, the Grim [March of the Machine Commander] Creature — Human Shaman // Enchantment Set: Explorers of Ixalan Type:

Set: Explorers of Ixalan Type: Instant Rarity: Rare Cost: {5}{W} Double target player's life total

And more importantly

Set: Commander Anthology Type: Instant Rarity: Rare Cost: {2}{R/W}{R/W} Cast this spell only before attackers are declared

Set: Commander Legends Type: Instant Rarity: Uncommon Cost: {2}{W} Destroy target permanent

gets +1/+1

Syr Konrad, the Grim [March of the Machine Commander] Creature — Human Shaman // Enchantment Set: Explorers of Ixalan Type:Set: March of the Machine Commander Type: Legendary Creature Human Knight Rarity: Uncommon Cost: {3}{B}{B} Whenever another creature dies, or a creature card is put into a graveyard from anywhere other than the battlefield, or a creature card leaves your graveyard, Syr Konrad, the Grim deals 1 damage to each opponent. {1}{B}: Each player puts the top card of their library into their graveyard.