What it does
"Blessing of Light" isn't an official Magic keyword or ability—it doesn't exist in the comprehensive rules or on any printed card. You may be thinking of something else, like the white instant Blessed Light (which exiles a creature or enchantment), or generic "blessing" mechanics such as the city's blessing (granted by ascend when you control ten or more permanents).
If you encountered "Blessing of Light" in a custom set, fan-made card, or another game entirely, its behavior would depend on that specific text rather than any standard MTG rule. Always check the actual card wording.
If you can share the exact card name or the text in question, I can explain precisely how it works, the common rules misunderstandings, and where it shines in a Commander game.
Iconic cards with Blessing of Light
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