This is somewhat similar to tutors, but it can actually be more dangerous in terms of threat level
With far more Black than Blue cards, it makes sense why the lands skew that way
Gorebyss #56Rare $0.15 Team Rocket's Tarountula #19Common $0.24 Rabsca ex #25Double Rare $0.55 Buizel #57Common $0.12 Ethan's Slugma #35Common $0.11 Breloom #6Common $0.08 Misty's Gyarados #49Rare $0.37 Misty's Psyduck #45Uncommon $0.28 Shroomish #5Common $0.12 Clamperl - 054/182 #54Common $0.14 Alolan Persian #79Uncommon $0.31 Alolan Persian #119Rare $3.14 Alolan Persian #57Uncommon $4.33 Alolan Persian #33Uncommon Alolan Persian - 79/149 (Cosmos Holo) #79Promo $3.88 Alolan Persian GX #129Ultra Rare $2.49 Alolan Persian GX - 040/064 #40Double Rare $0.95 Alolan Persian GX - 071/064 #71Super Rare $3.21 Alolan Persian GX - 077/064 #77Hyper Rare $10.67 Alolan Persian GX (Full Art) #219Ultra Rare $6.60
From preventing surface scratches to minimizing the tear typically caused by shuffling and gameplay, the Azorius Sleeves ensure that your valuable gaming cards stay in top condition
Incapsula incident ID: 441000700110131334-162714805973094790
So if you gave an opponent five rad counters, they will mill 10 cards, and there's a chance nine were nonlands, causing more life loss than counters, then a loss of nine rad counters (or all five in this example)