If I attack with Hero of Bladehold and put a creature into play with ninjutsu does it get +1/+0 bonus?
If I attack with Hero of Bladehold and put a creature into play with ninjutsu does it get +1/+0 bonus?
No. You can't ninja the creature in until after blockers have been declared, which is long after battle cry has resolved and pumped your dudes.
Fluttershy is best pony.