Tier 2 upgrade
Thundering Arc
Thundering Arc (0-2-0) turns Skywarden arrows into Plasma blasts that pop Lead and grow with distance. Fires over walls with Set Target.
Arrows unleash a thunderous explosion that grows in size over distance. Can fire over walls and be set to target a location.
Stats
Main attack
- Damage
- 1
- Pierce
- 4
- Attack speed
- 1.55s
- Range
- 48
How to use Thundering Arc
Thundering Arc changes how arrows work: each shot now creates a blast at the target after a short delay. The blast has a 10 radius, 4 pierce and deals 1 Plasma damage, which pops Lead but not Purple Bloons. For every 10 units the shot travels, the blast gains +1 pierce and +1 radius, so long shots hit bigger groups. The Skywarden also ignores obstacles and gains a Set Target option to fire at any point in range.
When to buy it
- It is a cheap early Lead answer.
- Long-distance shots give more pierce, so place it where it covers a lot of track at range rather than along a straight line, where blasts overlap less efficiently.
- Line-of-sight blockers no longer matter, which makes it the go-to crosspath for other paths on maps with walls.
- Higher tiers on this path can hit visible DDTs without help.
Is it worth it?
Yes, it is usually a direct improvement over Storm's Pulse, and a good crosspath for Wind Weaver or Coldchain on obstacle-heavy maps.
All Skywarden upgrades
Top path
Middle path





















