If that creature is a legal target but the creature you don't control isn't, your creature will still get +1/+2
Again, its not as broken as Tolarian Academy (how could it be?), but being able to produce white mana based on the number of enchantments you control can still lead to some truly bonkers turns, especially for Enchantress players
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But less aggressive red decks are certainly possible, and far from uncommon
It makes sense that these cards then are the most valuable in the set, combined with a unique border and foil design that compliments the card art
Why does Circle of Protection: Red end up on this list while the other four do not