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Its possible to use this offensively, to turn their cool thing into some lame thing thats already on the field, but really, wouldnt you rather have a counterspell or an Ixidron to deal with that problem

is probably something that Gullveig banished

And to make them last longer, you should consider card sleeves and playmats since they can provide better protection for the cards

The abilities of other Knowledge Pools will do nothing when they resolve, as the original spell will already have been exiled.

Something doesnt add up though

Ive been in lines at other stores with them and theyve all been respectful in the past