A two-ink card, Bucky, Squirrel Squeak Tutor has the Ward keyword, meaning that it can only be targeted by being challenged, as well as its Squeak ability, which forces all other opponents to discard a card whenever you play a Floodborn character
The lion's share of these cards steal spells by letting you exile then cast them, so you can pick up plenty of synergy from cards like Doc Aurlock, Grizzled Genius, Vega, the Watcher, and Passionate Archaeologist to make them sing
Two are mono-colored, the Dragonhhawk costs five for an on curve 5/5 flyer that exiles and makes castable cards from your library when it arrives or attacks, equal to your high-powered dork count
If this spell was cast from a graveyard, instead create X of those tokens, where X is the number of creature cards in your graveyard