There are nuances White Plume Adventurer is the cheapest, Caves of Chaos Adventurer performs well in cast-from-exile decks, etc
Some initial flaws due to cutting
The only downside to this card is that the opponent can play Fan of Waves against you, however, we can make up for missed Energy attachments by using Victini Vs (SSH) Spreading Flames attack
I would like to show you one of the decks that I call ~Monarch mathematically unbrickable
Notably, Solitude can be cast without mana, and that's a powerful effect
(Choose any number of permanents and/or players, then give each another counter of each kind already there.) When Cacophony Scamp dies, it deals damage equal to its power to any target