Chandra, Hope's Beacon's second ability by putting two loyalty counters on it, adding two mana of any color
Activate
Chandra, Bold Pyromancer's first ability by putting a loyalty counter on it, adding ({R} magic symbol) ({R} magic symbol) and dealing 2 damage to a player
Activate
The Chain Veil by paying ({4} magic symbol) and tapping it, allowing you an additional activation of your planeswalkers' loyalty abilities this turn
Activate
Teferi's first ability by putting a loyalty counter on it, untapping
The Chain Veil and causing you to gain two life
Repeat
Results
Infinite damage
Infinite colored mana
Infinite lifegain
Infinite lifegain triggers
Infinite untap of permanents you control
Infinite activations of loyalty abilities of all other Planeswalkers you control