Helm of the Host (Retro Schematic) [The Brothers' War Retro Artifacts] Human Assassin Pirate Sacrifice a creature or enchantment:

Sacrifice a creature or enchantment: Counter target spell

When Thought-Knot Seer enters the battlefield

{3}: Xantcha's controller loses 2 life and you draw a card

Set: Secret Lair Drop Promos Type: Creature — Sliver Rarity: Rare Cost: {1}{W}{B} All Slivers have “{3}

you may have that creature assign its combat damage as though it weren't blocked

Helm of the Host (Retro Schematic) [The Brothers' War Retro Artifacts] Human Assassin Pirate Sacrifice a creature or enchantment:Set: The Brothers' War Retro Artifacts Type: Legendary Artifact Equipment Rarity: Mythic Cost: {4} At the beginning of combat on your turn, create a token that's a copy of equipped creature, except the token isn't legendary. That token gains haste. Equip {5}