Short answer: Grimsley's Move as a single is the statistically smarter choice. Below you'll find the single price, pull rate, and how many Phantasmal Flames packs you need for realistic odds.
Recommendation
Buying the single is statistically better
For a 50% chance to pull this card you need roughly 142 packs. That costs around 1126 €, while the single price is 1.47 €.
Probability, pack count, and cost compared to buying the single.
Chance
Packs
Pack Cost
Diff vs. Buy
50% Chance
142
1126 €
+1125 €
75% Chance
284
2252 €
+2251 €
90% Chance
471
3735 €
+3734 €
99% Chance
941
7462 €
+7461 €
Buy vs. Pull Analysis for Grimsley's Move
If you specifically want Grimsley's Move from Phantasmal Flames, buying the single is the reliable path. A booster currently costs 7.93 €, but the pull rate is only 0.488% per pack. Even the 50% threshold sits at 142 packs.
Packs can still be fun if you want multiple cards from the set or if the opening experience itself is the value. As a pure price decision, pullrates.gg always compares the cost of getting one specific card against its market price as a single.
FAQ about Grimsley's Move from Phantasmal Flames
Should I buy Grimsley's Move as a single?
Grimsley's Move as a single is the statistically smarter choice.
How many Phantasmal Flames packs do I need for Grimsley's Move?
For a 50% chance you need about 142 packs, for a 90% chance about 471 packs.
What is the pull rate of Grimsley's Move in Phantasmal Flames?
The pull rate is 0.488% per booster, roughly 1 out of 205 packs.
Why is buying the single often cheaper?
With rare cards, opening packs means paying for many unsuccessful pulls. Buying the single removes that risk and gives you exactly the card you want.