[quote=Xzayler]
You'll see.I can use max 4 Natrelmon right? And I can't switch between them.
[/quote]

In general most combat ends up being 1 Natrelmon vs 1 Natrelmon, just because otherwise it gets very time consuming. Or 2 vs 2 battles are also somewhat common.

Recalling a Natrelmon though, makes it unable to be summoned again for honorable combat.