Of these, I think Phils ability is actually the strongest
Reddit user iamnotwason reports opening fifteen drops and finding three Chaos Emeralds, which isnt terrible odds

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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
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