r/mtgrules • u/Tall-Garbage4066 • 19d ago

Continous effect.

Suppose there is an effect that says, “Creatures you control with power 4 or greater have haste.”

If I control a creature with power 3 that is equipped with an Equipment giving it +2/+2, how is this handled under the current CR?

Continuous effects that modify power and toughness are applied in Layer 7, while effects that grant or remove abilities are applied in Layer 6.

Does the application of the Layer 7 effect cause the Layer 6 effect to become applicable? In other words, is the creature considered to have power 5 when determining whether the Layer 6 effect applies?

Can an effect in Layer 6 depend on a characteristic value that is determined in Layer 7?

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u/peteroupc 19d ago edited 18d ago

An effect of the kind you're describing is not practically functional under the comprehensive rules. If such an effect were to exist, the effect wouldn't take account of layer-7 effects to see what power a creature has. Indeed, see C.R. 613.1, 613.1f-g. Also, the rules for dependency and timestamps under C.R. 613.7 and 613.8 apply only to the case of effects in the same layer or sublayer.

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u/ardarian262 19d ago

While this is the answer, there are some parts within layers, such as devotion and [[Altar of the Pantheon]], which work counter to how the rules should work in theory. It's not impossible for WoTC to make a card that breaks the CR and in fact many do, but this specific way of doing it is unlikely to be done.

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u/peteroupc 19d ago

Effects that modify devotion are governed by C.R. 700.5a. See the rule's example.

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u/ardarian262 19d ago

It's mostly it going in-between layers that do not have sub-layers which I was referring to.