Based on my own experience with opening this set, here's the pull rates for Mega Evolution: Double Rares (ex): 21.8% or 1 in 4.6 packs Ultra Rares: 10.9% or 1 in 9.2 packs Illustration Rares: 10.9% or 1 in 9.2 packs Special Illustration Rares and Holo Rares: At least 1 in over 55 packs With that being said, here's some of the best cards I've pulled from Mega Evolution and where you can get them right now: Should you get Pokmon TCG: Mega Evolution
Then you can spend three mana to sac an artifact and double the equipped dork's power

Here's where to buy all of these cards: Mega Lucario ex 077/132 Double Rare / Ultra Rare / Special Illustration Rare / Holo Gold Rare Riolu 076/132 Common / Reverse Holo Stonjourner 081/132 Common / Reverse Holo Lunatone 074/132 Holofoil / Reverse Holo / Promo (Stamped) Solrock 075/132 Uncommon / Reverse Holo Garganacl 084/132 Uncommon / Reverse Holo / Illustration Rare Naclstack 083/132 Common / Reverse Holo Nacli 082/132 Common / Reverse Holo Fighting Gong 116/132 Uncommon / Reverse Holo / Ultra Rare Premium Power Pro 124/132 Uncommon Wally's Compassion 132/132 Uncommon / Reverse Holo / Ultra Rare / Special Illustration Rare Mega Signal 121/132 Uncommon / Reverse Holo / Ultra Rare Energy Switch 115/132 Common / Reverse Holo Boss's Orders 114/132 Uncommon / Reverse Holo Acerola's Mischief 113/132 Uncommon / Reverse Holo / Ultra Rare / Special Illustration Rare My favorite pulls and pull rates from Mega Evolution I've opened a combined 55 booster packs for Mega Evolution across its Booster Box, Booster Bundle, Elite Trainer Box, and Build and Battle kit, so I have half an idea when it comes to pull rates for this set

You can identify which cards are your heavy hitters and which ones might be worth trading away
On the other hand, Discreet Retreat is another very powerful, but very narrow card: For 4 mana, you get ramp, color-fixing, and card draw on a land enchantment - but once again only if you're dealing with outlaws