Hi, I've some questions about ongoing damages:
1. what happens to a pc who's taking ongoing damage from an effect at the end of a combact? He must roll every round out of combact until dies ors saves?
2. If a player takes multiple ongoing damages (for example he's hit 3 times by a blazing skeleton orb) he must save three times to be free or only one?
3. Yesterday night my party was fighting against a boneshard skeleton. When the BS was at 4 hp, and in the middle of the party, our cleric cast a turn undead. The turn undead power says that it inflicts radiant damages and push the enemy 3'. The BS has a power that makes it explode when reaches 0 hp in a 3' burst. So what's up? The turn undead power kills with radiant damage the skeleton and then the skeleton immediately explodes in the middle of the party OR the power inflicts the damage AND immediately forces movement BEFORE the BS explodes?
Please assist a poor DM.

TY
1. what happens to a pc who's taking ongoing damage from an effect at the end of a combact? He must roll every round out of combact until dies ors saves?
2. If a player takes multiple ongoing damages (for example he's hit 3 times by a blazing skeleton orb) he must save three times to be free or only one?
3. Yesterday night my party was fighting against a boneshard skeleton. When the BS was at 4 hp, and in the middle of the party, our cleric cast a turn undead. The turn undead power says that it inflicts radiant damages and push the enemy 3'. The BS has a power that makes it explode when reaches 0 hp in a 3' burst. So what's up? The turn undead power kills with radiant damage the skeleton and then the skeleton immediately explodes in the middle of the party OR the power inflicts the damage AND immediately forces movement BEFORE the BS explodes?
Please assist a poor DM.


TY