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This Defense Position card cannot be targeted, or destroyed, by card effects

This will be right at home in decks with high mana value cards and will likely play quite nice in slower decks without all the zero to one drop ramp/rituals or low cost interaction

This is sort of the Labyrinth is a potent piece of colorless mana ramp, so the decks that may seek to play it might be a little bit more narrow than Urzas Saga, but it accelerates decks like Tron and Affinity beyond what any other piece of ramp can currently do

If you have an attack lined up with a trample or evasive creature, casting this for 4 mana might just be a Concentrate or better

Red has like four (?!!) better card draw options in this very set

While 20 damage doesn't seem like much, it means Druddigon is going to become even more of a terror, as when combined with its Rough Skin ability, the Pokemon can deal 40 damage without even attacking