Is there a possibility to pump a creature after it has dealt its first strike damage, so that in the regular damage step it gets the bonus? I want to make sure since I could use Pyrewild Shaman twice with this scenario, in the event where my creature is unblocked.
Yes. If an creature with first strike or double strike is involved in combat, there are two combat damage steps. Since players get priority during each step of combat, you can use instants and take other actions with that timing after the combat damage turn based action of the first combat damage step has been dealt with, still during that first combat damage step.
Regarding Burse stark, and Odric, the answer is ‘No’. This is because Odric’s ability triggers at the beginning of Combat step (before declare attacks) and Burse’s doesn’t trigger until after he has been decclared as an attacker.
Another question involves Bruse Tarl, Boorish Herder and Odric, Lunarch Marshal. Can Bruse provide lifelink and doublestrike to all creatures or is it too late once he attacks?
Former Rules Advisor
"Everything's better with pirates." - Lodge
(The Gamers: Dorkness Rising)
"Any sufficiently analyzed magic is indistinguishable from science."
(Girl Genius - Fairy Tale Theater Break - Cinderella, end of volume 8)