*Note that this is an expansion and requires a copy of either the Arkham Horror the Card Game Core set or the Arkham Horror Revised Core Set in order to play
The mewtwo pokemon card value is shaped by a specific combination of factors
This is borne out by the comp rules: 903.4c The back face of a double-faced card (see rule 711) is included when determining a cards color identity.
It doesn't matter if the other spells resolved, didn't resolve, were countered, or are still on the stack
Notable cards like The Day of the Doctor provide significant value and board control, while companions such as Amy Pond and Astrid Peth offer additional synergies and support
How much resiliency this provides or how meaningful on the margins this change will be on matchup percentages needs more time to be appropriately assessed, but its certainly a favorable outcome for decks most hurt by Blood Moon effects in the meta that also lean into Urzas Saga