It needs five to survive using its ability, and doesn't have a built-in way to get more counters
Que todos vocs." Tezzeret Set Number 53 Language Portugus Legal Formats Commander, Legacy, Modern, Pioneer, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Historic, Pauper, Standard, Timeless Rulings (2/9/2017) If the target creature becomes an illegal target, Battle at the Bridge doesn't resolve and none of its effects happen
The One Piece TCG Tournament Pack Vol
There are the "Saruman the White" and "Saruman of Many Colors" cards you might expect, but the disgraced wizard even makes an appearance as "Sharkey, Tyrant of the Shire," after the episode that pitted him against our Hobbit heroes one final time
The possibilities for deck building will only increase once Lorcana releases its second set of cards
this means you can afford to have fewer lands as a result