Keldon Halberdier [Mystery Booster] Zombie Kraken Set: Dominaria United Commander Type:

Set: Dominaria United Commander Type: Artifact Rarity: Common Cost: {3} {T}: Add one mana of any color in your commander's color identity

but my host would casually push it down before I could make out what it was

Remove three oil counters from Serum-Core Chimera: Draw a card

Set: The Lost Caverns of Ixalan Promos Type: Land Rarity: Rare Sunken Citadel enters the battlefield tapped

Set: Innistrad: Midnight Hunt Type: Creature — Human Warrior Rarity: Common Cost: {1}{G} Coven — At the beginning of combat on your turn

Keldon Halberdier [Mystery Booster] Zombie Kraken Set: Dominaria United Commander Type:Set: Mystery Booster Type: Creature Human Warrior Rarity: Common Cost: {4}{R} First strike Suspend 4{R} (Rather than cast this card from your hand, you may pay {R} and exile it with four time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, cast it without paying its mana cost. It has haste.)