Blood Moon + Opalescence

AI draft — not yet human-reviewed. Check citations and flag anything that looks wrong. How pages are reviewed.

Overview

Blood Moon makes nonbasic lands Mountains (it changes land subtypes) while Opalescence animates non-Aura enchantments into creatures. Because Blood Moon doesn’t make lands into enchantments, Opalescence does not turn ordinary nonbasic lands into creatures. If a permanent is both a land and a non-Aura enchantment, Opalescence can animate it; the order/timestamps of the continuous effects determine exact results [2009-10-01].

The StackRules & CitationsDetails & Edge Cases

Step 1

Identify the permanent: Is the permanent a land only, or is it both a land and a non-Aura enchantment? Blood Moon’s text affects nonbasic lands; Opalescence affects non-Aura enchantments.

Step 2

If the permanent is only a land (not an enchantment), Blood Moon changes its subtype to Mountain but does not make it an enchantment, so Opalescence has no effect on it (Opalescence targets/affects only enchantments) [305.8] [208.3].

Step 3

If the permanent is both a land and a non-Aura enchantment, then Opalescence can make it a creature in addition to its other types. Both the type/subtype changes occur in layer 4, so timestamp/order between Blood Moon and Opalescence matters for which layer-4 effect wins where they conflict [2009-10-01].

Step 4

If an Aura somehow becomes a creature due to Opalescence, it can’t legally enchant anything; if it’s attached to an illegal object it will be put into its owner’s graveyard as a state-based action [303.4d] [704.5n].

Step 5

Remember that a permanent that becomes a creature this turn can attack or activate abilities only if its controller has continuously controlled it since the start of their most recent turn [2008-08-01].

Resolution

Blood Moon alone does not cause Opalescence to animate nonbasic lands. Opalescence only animates non-Aura enchantments; a land that is not an enchantment remains a land and is not affected by Opalescence. If a nonbasic land is also a non-Aura enchantment, Opalescence can make it a creature (subject to timestamp/layer interaction) [2009-10-01].