Baral and Ragavan

Flying, menace, hexproof
Whenever a spell or ability you control counters
a spell, or destroys or exiles a permanent, create a
2/1 black Monkey Demon creature token with
flying and menace.
Whenever a monkey deals combat damage to a
player, exile the top card of that player's library.
You may cast spells from among cards exiled with monkeys you control without paying their mana
costs for as long as they remain exiled.