So one of my newest cards is called Megalodon. You can probably guess what that is. It's a 10/4 creature and if you pay 1 colorless mana then it gains vigilance until end of turn.
The other one is called Seraph of the Underworld. First of all, seraphs are normally thought of as angels and should be white creatures, but Seraph of the Underworld is a black legendary enchantment creature. It costs 2 black mana and 6 colorless mana to cast and it acts as an archetype (Archetype of Imagination, Archetype of Finality, etc.). Seraph of the Underworld is a mix of Archetype of Imagination, Archetype of Finality, and if there was an archetype that gave all of your creatures lifelink (correct me if I'm wrong). So Seraph of the Underworld gives all of your creatures lifelink, deathtouch, and flying as long as Seraph of the Underworld is still on the battlefield.