Like most of the oh-so-many price spikes we're seeing this week, it's sparked by the release of Modern Horizons 3 on June 14
However, that five-mana difference materializes through two very real drawbacks: the cumulative upkeep cost of one generic mana, and the ability of your opponents to player it around it
Reddit user iamnotwason reports opening fifteen drops and finding three Chaos Emeralds, which isnt terrible odds
Lets get that out of the way
It may not completely save you against direct-damage decks, but for creature-combat decks, this reads THE END. Only your own player error or a good Disenchant/Shatter/Naturalize can wreck this
Wrenn and Six [Most Efficient Two-Mana Planeswalker] Discussions about the best planeswalker always end up circling back to Wrenn and Six, usually followed by someone saying, Its only two mana. Yes, and thats the problem