New force spawning Marks of Grace

Jagex recently explained in detail when a mark of grace will spawn (https://oldschool.runescape.wiki/w/Ma... ). This allows us to optimise force spawning marks of grace instead of guessing what the best methods are.

In this video I show the bankstanding method, sped up x5. You want to run a single lap of Ardougne rooftop (other courses work too but have a lower MOG percentage - this does work at Seers in particular) every 3 minutes, i.e. ~2 minutes of bankstanding and ~1 minute of teleporting in, running the lap, teleporting back out. With the elite Ardougne diary completed this has a 75% chance of spawning a mark of grace (which you can then pick up on the NEXT lap).
In this video I got lucky, getting 9 marks in 10 laps (30 minutes).

You can optimise this even further by watching the ingame second timer.

You can go less often than every 3 minutes (but going faster will reduce the success rate of spawning the marks). Just keep in mind the (stack of) MOG(s) will despawn after 10 minutes, so you have to start the next lap ~9.5 minutes after completing the previous one at the latest. This means the time window for this method is very generous - between 3 and 10 minutes per lap.

If you get a lap where no MOG spawns, just keep the 3 minute timing as usual. There is no point to running (or starting) a second lap, since the failed roll happened on the last lap (over 2 minutes ago). When you're done with force spawning do one more lap to pick up a possible final MOG.

Since amylase is likely to be added to the hallowed sepulchre with a future poll this method will likely be irrelevant soon (and so will all rooftops in the game), but it's cute while it lasts.

Some interesting activities to include with force spawning MOGs include: sepulche laps, herb runs, bankstanding herblore(/caviar), non-pvp plankmaking, runecrafting (zmi or true bloods).