Florian, Broken and Mended

Flying, lifelink
Whenever another angel enters the battlefield
under your control, gain 1 life. Florian can't be
equipped. At the beginning of each end step,
put a +1/+1 counter on Florian if you gained 3
or more life this turn. When Florian has 3 power,
it gains hexproof. When it has 6 power, it gains
trample. When it has 9 power, it gains double
strike and indestructable.
Attack: put a +1/+1 counter on each other angel
you control, equal to Florian's power.