A few choice lines are all it takes
The first set this mechanic appeared in was Future Sight in 2007, on Tombstalker, Logic Knot, and Death Rattle
Its at its best out of the sideboard as a response to decks whose game plan is to smack you with a single, massive threat
This version of Teach has the leader of the Blackbeard Pirates shut down one of your opponents Leader cards for the turn, as well as neutralizing an enemy character and preventing them from attacking until your next turn
Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.) Whenever you gain life, Amalia Benavides Aguirre explores
What do you think is the most flavorful DFC in the set