Food Chain exiles Nadier for 7 mana and Nadier leaves an Elf per point of power. Recasting it costs 6 plus commander tax, and exiling the Elves afterwards makes 1 mana each and grows the new Nadier from 3 power. The tax grows by 2 a cycle and the Elves by 3, so after a few cycles the loop pays for itself.
Mana to start
Commander tax
Your mana, step by step
100510152025
To start: To start: 0
Exile Nadier with Food Chain: Exile Nadier with Food Chain: 1
Recast it for : leftRecast it for : left2
Exile its 3 Elves: Exile its 3 Elves: 3
Exile Nadier with Food Chain: Exile Nadier with Food Chain: 4
Recast it for : leftRecast it for : left5
Exile its 6 Elves: Exile its 6 Elves: 6
Exile Nadier with Food Chain: Exile Nadier with Food Chain: 7
Recast it for : leftRecast it for : left8
Exile its 9 Elves: Exile its 9 Elves: 9
Exile Nadier with Food Chain: Exile Nadier with Food Chain: 10
Recast it for : leftRecast it for : left11
Exile its 12 Elves: Exile its 12 Elves: 12
Exile Nadier with Food Chain: Exile Nadier with Food Chain: 13