Even one successful use is generally worth it, and if you have the means to shuffle your library through a fetchland like Misty Rainforest, a tutor effect like Worldly Tutor, or even another mana ramp spell like Skyshroud Claim, you can improve your odds of success dramatically
These cards all mention Nicol Bolas, usually as their disciples or planeswalkers influenced by him: Augur of Bolas Bolas's Citadel Disciple of Bolas Domri, Anarch of Bolas In Bolas's Clutches Nicol Bolas Slave of Bolas Tezzeret, Agent of Bolas We can also highlight the original Nicol Bolas card as a dragon from the Legends set
If you use a tcg card builder, you can join events or share your cards in groups online
The cards are not the problem
While not essential, it's always nice to get a graphical flourish as some massive bomb enters play and destroys your opponent's plans
even if two players are venturing through two dungeons with the same name, each of them owns a separate dungeon card