The game itself recognizes the trigger event, and the ability fires automatically
The backup commander from Call for Backup is Shalai and Hallar, and it can provide a steady stream of damage to your opponents, especially if you lean harder on the +1/+1 counter theme
Not only can Rowan and Will handle protection in this archetype, but Rowans ultimate is a massive bomb, too
This one can be played through, as they still get tokens from Saheeli and Sai, but if you cast it early you can really stifle their development
Its certainly unfair with flicker creatures and can lock people out of playing spells and can also get big enough to rule the unfriendly skies
Get your opponent to lose 3 life points repeatedly by attacking with these tokens with menace or with cards that drain their life totals like God-Pharaoh's Statue and Grima Wormtongue