The attacked player will get the poison counters at the same time they take normal combat damage, with no window for any kind of response
: Another target creature gets +2/+0 and gains trample until end of turn
When it enters, you can phase out any target creatures you control
Think of it like this: All your creatures become Ragavan, Nimble Pilferer
By keeping the Sable, you enable yourself to potentially attack backor combine with the Inquisitor to take out something more threatening in the future
Gettin Mama Odie, Mystical Maven out there early - which should be doable thanks to the cheap cost of the card - alongside a handful of songs, will very quickly put you into a position wherein you can play a lot more cards per turn or a much more expensive, and more powerful, card a lot earlier than your opponent