In Tarkir: Dragonstorm collector boosters (12 packs per box), you can expect about 0.120 halo foil cards per box - roughly 0.0100 per pack. That works out to a 11.3% chance of pulling at least one halo foil card per box, or about 1 in 9 for your first hit. The chase end is often Ugin, Eye of the Storms (about 1 in 84 for that specific printing).
Halo foil on Universes Beyond and special releases.
Per-printing expected pulls and odds of at least one per box.
| Card | Price | Expected / box | P(≥1) | 1 in N boxes |
|---|---|---|---|---|
Ugin, Eye of the Storms #409 · mythic | $454 | 0.012 | 1.2% | 1 in 84 |
Elspeth, Storm Slayer #411 · mythic | $313 | 0.012 | 1.2% | 1 in 84 |
Craterhoof Behemoth #414 · mythic | $236 | 0.012 | 1.2% | 1 in 84 |
Dracogenesis #412 · mythic | $134 | 0.012 | 1.2% | 1 in 84 |
Clarion Conqueror #410 · mythic | $94.85 | 0.012 | 1.2% | 1 in 84 |
All-Out Assault #415 · mythic | $38.40 | 0.012 | 1.2% | 1 in 84 |
Sarkhan, Dragon Ascendant #413 · mythic | $35.74 | 0.012 | 1.2% | 1 in 84 |
Narset, Jeskai Waymaster #417 · mythic | $23.69 | 0.012 | 1.2% | 1 in 84 |
Death Begets Life #416 · mythic | $18.99 | 0.012 | 1.2% | 1 in 84 |
Skirmish Rhino #418 · mythic | $15.98 | 0.012 | 1.2% | 1 in 84 |