Calculator
Magic: The Gathering Arena drop rate calculator
Your chance of Mythic Wildcard in place of the rare (1 in 30) from the Booster pack in any number of pulls at Magic: The Gathering Arena's disclosed 3.3333% rate. Pick any other disclosed rate below, then see what Gems cost in £.
Chance of at least one drop in 21 pulls
50.9%
- Average pulls to get it
- 30
- Pulls for an even chance
- 21
- Pulls for a 90% chance
- 68
- Pulls for a 99% chance
- 136
Pulls along the bottom. The dot is your planned number of pulls.
How it works
Each pull is treated as independent, with the same chance every time. The chance of at least one drop in n pulls is 1 − (1 − p)n. With a guarantee on pull N, the chance is 100% from pull N, and the average number of pulls falls to (1 − (1 − p)N) ÷ p.
Some games also raise the rate a little in the pulls before the guarantee (soft pity). That isn't modelled here, so for those games the real average is a little lower than shown.
How pity works explains the maths in more detail.
What Gems cost
Cheapest way to get 1,600 Gems
£9.99
1 × 1,600 pack
- You get
- 1,600
- Gems
- Per 100 here
- 62p
- Best pack per 100
- 50p
- the 20,000 pack
| Pack | Price | Per 100 | Source |
|---|---|---|---|
| 750 Gems (App Store UK) | £4.99 | 67p | apps.apple.com Checked 3 Oct 2026 |
| 1,600 Gems (App Store UK) | £9.99 | 62p | apps.apple.com Checked 3 Oct 2026 |
| 3,400 Gems (App Store UK) | £19.99 | 59p | apps.apple.com Checked 3 Oct 2026 |
| 9,200 Gems (App Store UK) | £49.99 | 54p | apps.apple.com Checked 3 Oct 2026 |
| 20,000 Gems (App Store UK) · best value | £99.99 | 50p | apps.apple.com Checked 3 Oct 2026 |
We count the amount in each pack's name. Some stores add extra Gems on a first purchase or during an event; those aren't counted, so you may get a little more.
Where these numbers come from
Rates are exactly as the publisher discloses them, with the source and the date we checked each one on the Magic: The Gathering Arena page. We don't estimate rates a publisher hasn't published. Every rate publishers have disclosed, game by game, is in our Drop-rate index.
Game dataMagic: The Gathering Arena5 disclosed rates · 5 prices · 17,205 players