The level 23 utility that heals you for 1% health when one of your deathmarks is consumed is bugged. There's currently a ~3 second inner timer on the healing, so you effectively only get 1% health every 3 or so seconds.

Please fix this asap.

The rate limit is just missing from the description. 3s is maybe too long for what it is, but the self healing would be extremely busted without any sort of limit in AoE situations. If you managed to DoT spread to 8 targets, that's a 15% heal per target over 15s, so 120% healing total. Even at 100%, you'd be doing 26k effective to yourself from that buff alone. You'd be literally immortal from everything but one-shots.

That 3s rate limit is too long to make it a useful choice. At 1.5s or even 1s, it might become more of a choice.

Realistically speaking the 15 deathmarks will fall off in about 7 or 8 seconds. Maybe even quicker. At 10 seconds that would give around 7% healing every 15 seconds, since it would tick for 1% health every 1.5 seconds for a total of about 7 ticks.

That's not too much and would actually make that more of a choice.

It might actually be better to increase self healing that way instead of adding that leech on force lightning they are doing in the next update. A welcome change, but it may turn madness into a one trick pony, pretty much. Force Lightning everywhere! All the time! Unlimited Powah!