With any of these, just make sure not to target instants and sorceries
Bend the Elements, Save the World, and Make New Friends Your journey with Magic: The Gathering | Avatar: The Last Airbender begins at your local game store
Of course, nothing screams ULTIMATE VALUE like casting Flood of Tears and immediately dropping down Omniscience
The usual suspects apply for sacrifice outlets: From there you can just win the game by attacking with your arbitrarily large army of amoebae, from the triggers on something like Blood Artist or Zulaport Cutthroat, or by gaining arbitrarily large amounts of life
A free spell as long as you control your commander, it's not too flashy but its reliable , which is an important quality for a fog effect
At a slightly higher level of competition, Mark Justice and Henry Stern really pushed the absurdity of Channel + Fireball to new heights at US Nationals 1995