And he's a Commander Staple, but his card draw ability doesn't help other permanents in your brew
There are other more complex ways to break this, which is kind of weird
The way it works, is when Thassas Oracle enters the battlefield, you get to look at the top X cards of your library, where X is equal to your devotion to blue (how many blue mana symbols appear in the casting cost of all permanents you control)
Then when it does damage to the player, it gets a counter making it even bigger
Hurl Through Hell Look, I probably shouldve just talked about how cool the Prosper, Tome-Bound deck is instead of making this list, considering so many of the cards in here are from that deck
This two-drop 0/1 flying Bird Pirate cannot block, and then when you deal combat damage to a foe with a Pirate, you explore here once for all of the damage dealt, and then that's just once per combat step unless you have one with double strike or at least two dorks one with first strike and one without