black card draw mtg Five essential cards for Commander Mono-Black Card Draw Package –

Leonardo has all five mana colors listed on his card to activate an ability, so by choosing him, the deck is legal

Seedship Broodtender is a green-black insect that mills three cards when it comes into play and can be sacrificed at the cost of 3BG to return a creature or spacecraft to the battlefield at sorcery speed

Was it an instant

Having a second enchant creature on the list is clearly a sign that these decks played things pretty safe as far as two-player games of Magic go, but Grim Reapers Sprint incentivizes you to cast it at a point in the turn where you would expect your opponent to have already fired off their removal spells