In the unusual case where Unwilling Vessel has +1/+1 counters on it and then receives an amount of -1/-1 counters that causes it to die, use the total number of counters that were on Unwilling Vessel when it died, including all of the +1/+1 and -1/-1 counters, to determine the value of X
This means that any creatures you equip with aura cards, bits of equipment or those you put counters on count as modified
Lots of tracking involved with this one, which can be a turn-on or a turn-off depending on your play style
Jumpstart is still the fresh and exciting thing, and its set to make a tremendous impact on Historic (and potentially Legacy)
Planeswalkers can have indestructible that protects them from destroy effects, but they can still be removed by losing all their loyalty counters, being exiled, being sacrificed, or being sent to a different zone