Traditional Foil Borderless Mythic Planeswalker in 3% of boosters

Apply them as rocky foundations

Expansion Special Guests Rarity Mythic Game Magic Category Magic Single Mana Cost {1}{G}{U}{R}

Expansion Mystery Booster 2: Reprints from Across Magic's History Rarity Rare Game Magic Category Magic Single Mana Cost {1}{B}

Expansion Secret Lair Drop Series: The Sonic Superdrop Rarity Rare Game Magic Category Magic Single Mana Cost {2}{W}

Bristly Bill, Spine Sower (V.1) - Outlaws of Thunder Junction: Promos (Mythic) [POTJ-157] DeckBoxes Traditional Foil Borderless Mythic PlaneswalkerExpansion Outlaws of Thunder Junction: Promos Rarity Mythic Game Magic Category Magic Single