ClimaxHeroDen-O
Ore, Sanjou!
The best way to limit DiEnd is to make his Summons no better than Mooks with big gunsthey hit hard but can't take a hit.
Well, it already seems like the KR canon established an unspoken 3-rider summon limit when using KamenRide cards, and the best way to keep the rider summons controlled is to basically take cues from the canon to how they fought most of the time, excluding strange cases like the IXA+Psyga double-summon