Mercurial Skies (3)

set	min	mtgo
-	C$ 0.50	0.0 tix

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Name	Mercurial Skies (3)
Type	Runeblade action
Description	The next Runeblade or Lightning attack action card you play this turn gets go again and "The first time this deals damage to a hero, you may destroy a Lightning Flow you control. If you do, deal 3 arcane damage to them." See more
Set	Omens of the Third Age #OMN061
Wallpaper	download
Image	download

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About Mercurial Skies (3)

Mercurial Skies (3), Runeblade action, designed by None first released in Jun, 2026 in the set Omens of the Third Age. It's currently being selled by the minimum price of C$ 0.50.

**Mercurial Skies (3)** is best suited for aggressive **Runeblade decks that lean heavily into Lightning synergies**, particularly Briar builds (especially pre-rotation Living Legend formats or casual play) that generate and maintain **Lightning Flow** to capitalize on its conditional arcane burst; it fits combo-oriented turns where you want layered damage (physical plus arcane) and value from go again to extend the chain. However, at 3 resources it competes with more efficient enablers like **Plunder Run (Red)** (for broader damage and card draw pressure), **Snatch (Red)** (for on-hit card advantage), or class-specific power spikes like **Channel Mount Heroic** (in Briar builds), which often provide more consistent or immediate payoff without requiring Lightning Flow setup. Because it needs both a follow-up attack and an active Lightning Flow to reach full value, it is somewhat conditional and resource-intensive, so while playable in dedicated Lightning Runeblade builds, it is general