what are proxy mtg cards - High Quality MtG Proxy MTG Proxy Print Quality Review:

I think its got a lot of potential in the 99 of various lifegain decks (both Trelasarra, Moon Dancer and Elas il-Kor, Sadistic Pilgrim spring to mind), but I could also see this as the commander of a creature-centric mono-white lifegain deck too

Worldpurge Worldpurge was a fixed Upheaval, though the resulting card may still be broken

If 3 is chosen, then it can only be damaged, enchanted/equipped, blocked, or targeted by cards that have a mana value of 3

You can either use it to counter a non-creature spell, or kill the creature you couldn't counter

The flashback on Memory Deluge isnt just free flashback value instead of looking at four cards, you get to look at seven