I got a Slayer in the Rift IB by GGing everyone waiting for Heavy. I know it is courteous and all, but waiting too long can get your entire team wiped. It is also not such a great idea to wait for heavy in Rift matches when the spark is nearly up. My team lost a match in overtime when four members ran off to camp heavy while the entire enemy team burned past me and another defender and style dunked on our Rift. Use your head and judge your time and position when Shaxx calls for purple. Don't let running for Heavy become a conditioned reflex.