In terms of raw efficiency, theres no better way to blink a creature than Ephemerate
9 Gathering Knowledge and Wisdom Gaining 2 lore fits in so many decks its a no-brainer
Whenever a creature you control attacks alone, target opponent loses 1 life and you gain 1 life
Being Rakdos-colored, this little Dragon can dive into the graveyard to cast Dragons, making any Dragon deck resistant to board wipe effects and non-exile spot removal, at the cost of the revived Dragon being unable to return a second time this way
The reason I bring this archetype up is that black is one of the best colors for Infect , especially since we have access to the only legendary creature that comes with Infect printed on him: Skithiryx, the Blight DragonSkithiryx, the Blight Dragon
Even without his special defensive and singing abilities, he's a solid character