Gilraen, Dúnedain Protector + Mana Echoes + Spark Double + Urabrask the Hidden

Gilraen, Dúnedain Protector

Mana Echoes

Spark Double

Urabrask the Hidden

How it works

1. Activate Gilraen by paying 2 and tapping it, blinking Spark Double.
2. Choose to have Spark Double enter the battlefield as a nonlegendary copy of Gilraen.
3. When Spark Double enters the battlefield, Mana Echoes triggers, adding C for each Human and/or Noble you control.
4. Activate Spark Double by paying 2 and tapping it, blinking Gilraen.
5. When Gilraen enters the battlefield, Mana Echoes triggers, adding C for each Human and/or Noble you control.
6. Repeat.
7. If you control one additional Human and/or Noble, this combo will net infinite colorless mana.