Vigean Graftmage, and Incubation Druid

Prerequisites

• Vigean Graftmage on the battlefield
• Incubation Druid on the battlefield
• Incubation Druid does not have summoning sickness
• Incubation Druid has at least one +1/+1 counter on it
• You control a land that can produce

Steps

1. Activate Incubation Druid's first ability by tapping it, adding
2. Activate Vigean Graftmage by paying , untapping Incubation Druid
3. Repeat

Results

• Infinite mana lands you control can produce