User blog comment:Leyrann/New Summoner Spell?/@comment-212.117.1.33-20120710160828/@comment-4834593-20120710174956

Ace the enemy team endgame. You know, to be able to do this, you first need to get endgame. If you only have one summoner spell for the laning phase, you have a lot of trouble against people who, like me, run Exhaust + Ignite. If you take Hand of Death + Flash, you can only win if you use Hand of Death in lane, which means you can't easiliy ace us.

Not to mention that 5 premades only play against other 5 premades, afaik.