Guild Wars 2

This is the routing I use to get 25 stacks of Might using D/D
(It could work with just off hand dagger with a few changes) .

Start with Lightning (auto set to Shocking Aura (3))
=Fury & Swiftness from Air I trait
+Protection from Earth V trait

1) Ride the Lightning (4) →
2) Lightning Touch (2) →
3) Updraft (5) →

4) Attune to Fire (while usually taking 2 steps forward)
+1 Might from Arcana V trait
+3 Might from Superior Sigil of Battle (if off internal cool-down) →
5) Burning Speed (3) →
6) Ring of Fire (4) →
7) Arcane Wave while moving to the edge of the ring
=Blast finisher (+3 Might) →
8) Dodge into the middle of the ring
causing Churning Earth (bug!) from Arcana XI trait
=Blast finisher (+3 Might)

9) Attune to Earth while in mid-dodge (causing the above bug)
+Protection from Arcana V trait →
10) Dodge back to the edge of the ring
causing Flame Burst (bug part 2!) from trait
=Blast finisher (+3 Might) →
11) Earthquake (4)
=Blast finisher (+3 Might) →
12) Churning Earth (5)
=Blast finisher (+3 Might)
(Ring of Fire usually expires here. It’s important to start CE BEFORE it does.) →

13) Armor of Earth (cantrip – immediately after starting CE)
+3 Might from Fire IV trait
+Regen & Vigor from Water III trait →
14) Lightning Flash (cantrip – just before CE goes off)
+3 Might from Fire IV trait
+Regen & Vigor from Water III trait →

At this point, if everything went well, you should have 25 stacks of Might as well as a few other boons.