Prowess out big unblockable fatties by burning cantrips and kill your opponents off with extra combats or just beat them down over a couple of turns
Then exile it.) Flavor Text "The specimen seems to be broken." Number 36 Language English Legal Formats Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pauper, Timeless, Vintage Not Legal Formats Alchemy, Pioneer, Standard Rulings (11/8/2024) "Flashback [cost]" means "You may cast this card from your graveyard by paying [cost] rather than paying its mana cost" and "If the flashback cost was paid, exile this card instead of putting it anywhere else any time it would leave the stack." (11/8/2024) You must still follow any timing restrictions and permissions, including those based on the card's type
Quickly get to 7 lands under your control so that it can start attacking and blocking
If you have an Ophidian Eye in your deck, you can happily remove Tome of Legends
For example, a cost like makes the card both white and blue, so it triggers payoffs like Hero of Precinct One
This only works if they don't choose to exile all graveyards when they cast the spell, something a lot of people do anyway, and likely only works once against someone who will choose to hit 'yards next time, but it's better than scooping to the laziest card ever designed