events

I'm trying to make events happen based on variables, (like # of players etc) but how would I make a event random? Like pick from 1 - 10 and (1 being A and two being B) so I could have random outputs? Im just wondering, if anybody knows that would be very helpful.

I've got some issues with Halloween bosses and how to enable "Truce mode" when they spawn (Cap point is blocked and Teams can't harm each other). I also wanted to know how to spawn the "MONOCULUS!" and Merasmus bosses. I've looked on some decompiled maps but i can't manage to spawn them...

I am wondering if this is possible, but is there a certain way you could do a event relative to the flags carrier or the carriers team, such as giving a speed boost or crits? Thanks.