Defenders of Humanity is a rare Enchantment card from Warhammer 40,000 Commander (40K), collector number 11. Current market price: $0.49, TCGplayer market prices via Scryfall.
When this enchantment enters, create X 2/2 white Astartes Warrior creature tokens with vigilance. {X}{2}{W}, Exile this enchantment: Create X 2/2 white Astartes Warrior creature tokens with vigilance. Activate only if you control no creatures and only during your turn.