Can Totems Leech Life?

"0.5% of Damage dealt by your Totems is Leeched to you as Life" and through that it was able to provide leech to the player.

Can you leech with totems?

If a minion or totem with leech hits another monster the leech will grant recovery to that minion or totem only, not the character. Leech on a trap or mine has no effect, as the source of the hit has no life to recover.

Does life leech work with damage over time?

Life Leech only works with the damage that you made instantly. Any Damage over time like Burning, and Chaos damage from Viper Strike for example is all damage over time that cannot be leeched as life.