one piece card game 11 OP-11 A Fist of Divine Speed Japanese Booster Box Display – JapHunter Includes Six Leaders with New Effects One Piece Card Game: Booster

5 Kaito Shizuki Is A Great Planeswalker For Ninjas Kaito Shizuki is a blue and black Planeswalker that has a lot of synergy with a ninja deck

Of course, you do

Firefist Striker (with another creature even) is another good follow-up

Of course, there are a few ways to speed up the process, like using proliferate or cards like Coretapper that allow you to add more counters to Darksteel Reactor

4 Feed The Swarm Feed The Swarm is one of the select few cards in monoblack that can destroy an enchantment (in fact, Ghastly Death Tyrant is the only other card that can) in the entire game, not just Pauper

All of which can hook players in if presented in approachable package