The Ur-Dragon itself is a nine mana WURBG 10/10 Dragon with flying
(Look at the top X cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) Once Lydia Frye has been blocked, increasing the blocking creature's power to 3 or greater won't cause Lydia Frye to become unblocked
Illustrated by Andrey Kuzinskiy Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Not Legal Modern Legal Brawl Not Legal Legacy Legal Comp
While they can be used for mana in the early game, they later become deadly threats
Notably, for this list, well be looking at the cheapest available printing of each card, not the Through the Ages variant specifically
Making Magic cheaper and more accessible to a wider range of players is a battle worth fighting, but buying, selling, and supporting counterfeit cards simply isn't the right way to fight it