Spell: Teleporting spell

My idea of a spell is one that when you throw the potion all troops inside the the potion area gets teleported to the core of a base. The thing is every time you upgrade it the potion and bring more troops in the core
Level 1: 20 troop units can teleport with 1 potion and lasts for 3 seconds Cost:45000 Upgrade Cost:2500000
Level 2: 30 troop units can teleport with 1 potion and lasts for 5 seconds Cost 50000 Upgrade Cost:3000000
Level 3: 40 troop units can teleport with 1 potion and lasts for 7 seconds Cost: 55000 Upgrade Cost:3500000
Level 4 : 50 troop units can teleport with 1 potion and lasts for 10 seconds Cost 60000 Upgrade Cost:4000000
Level 5: You decide:p

Too OP
10chars