Building The Deck Princess Twilight Sparkle and the rest of the Mane Six introduce a lot of unusual options and challenges to deckbuilding : each character cares about something different, with little overlap
Like most Magic: The Gathering cards, the value of Jenova, Ancient Calamity // Jenova, Ancient Calamity depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Final Fantasy Art Series)
While it can be dealt with cleanly by a Swords to Plowshares, assuming you managed to hit a creature or planeswalker of theirs, they would have paid three cards (Swords, discarded card and creature/planeswalker) for your one (Entomb/Faithless Looting and reanimation spell offset by drawing a card)
Trying to race a menace deck is a viable strategy if you can play aggressively enough
Even if you have 4 dudes to tap, you only get to activate this ability once per turn, per card