Why is second wind the best rune in its branch?
I’ve looked at recommended rune pages for Tahm Kench top on champion.gg and Op.gg and both say that having second wind is the highest win rate. I was wondering why this is the case. To me second wind seems pointless because your grey health should regenerate your lost health anyway. Shouldn’t conditioning be better on him because it will make him a better tank late game?