| Name | Cost | Price |
|---|---|---|
| Knight of the White Orchid | $1.87 | |
| Knight of the Widget | $0.22 | |
| Knight of Valor | $0.19 | |
| Knight Rampager | — | |
| Knights' Charge | $0.96 | |
| Knights of Dol Amroth | $0.15 | |
| Knockout Maneuver | $0.22 | |
| Knollspine Dragon | $0.40 | |
| Knotvine Paladin | $0.25 | |
| Knowing // Half the Battle | — | |
| Knowledge Exploitation | $7.61 | |
| Knowledge Is Power | $0.39 | |
| Knowledge Pool | $0.97 | |
| Knuckles the Echidna | $18.21 | |
| Kobold Overlord | $62.30 | |
| Kobold Taskmaster | $5.45 | |
| Kodama of the East Tree | $3.50 | |
| Kodama of the North Tree | $0.88 | |
| Kodama of the South Tree | $0.75 | |
| Kodama's Reach | $2.05 | |
| Kogla, the Titan Ape | $2.82 | |
| Koh, the Face Stealer | $0.47 | |
| Kokusho, the Evening Star | $26.87 | |
| Kolaghan Forerunners | $0.11 |