I have a few procedural questions about how multiple triggered abilities off ETB effects and stack sequencing would play out. Please correct me if I'm wrong with any of my steps in the scenario below.
1) Since both the Hydra's and Llanowar Reborn's triggered abilities trigger and go on the stack when the Hydra hits the field, the player may choose which goes on the stack first, and as such the player could choose to put the graft ability on the stack first, then the land fetch ability from the Hydra on top of that.
2) When the ETB land fetch ability resolves, a land ETBs and triggers the Sage's triggered ability, thus placing a proliferate ability on top of the stack (and thus on top of the graft ability already on the stack). Then as the proliferate ability resolves it could then choose the Llanowar Reborn and give it an extra +1/+1 counter. At this point the graft ability is still on the stack and hasn't done anything yet.
3) As the graft ability on the stack resolves, a +1/+1 counter is removed from the Llanowar reborn and placed on the Hydra, leaving a +1/+1 on the Llanowar Reborn as it had two on it prior to the graft ability resolving. If the triggers had been sequenced in the opposite order, the Llanowar Reborn would be left with zero counters, correct?
Bonus) If at the start of this scenario the Llanowar Reborn had no +1/+1 counters on it, but there was also a Nissa, Who Shakes the World on the field as well, the Nissa could use it's (+1) to turn the Llanowar into a creature (so long as it wasn't already), it would gain three +1/+1 counters, and those three counters could then be grafted away, correct?
That's right up through steps 1-3 as diagrammed. If you had resolved graft first, the +1/+1 counter would move, leaving it with 0, and now the proliferate action can't do anything to it.
If a Nissa gives a Llanowar Reborn three +1/+1 counters before Ulvenwald Hydra is cast, then the scenario is just as if the Llanowar Reborn started with three +1/+1 counters instead of one. You could do the same thing. And if you grafted first, you could proliferate the animated land after that.
Nissa's ability can't interject during the process after you cast the creature like the Hydra, because there's something on the Stack.
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An Evolution Sage and Llanowar Reborn with a +1/+1 counter are on the field. A creature that fetches a land on ETB (such as Ulvenwald Hydra) is played.
1) Since both the Hydra's and Llanowar Reborn's triggered abilities trigger and go on the stack when the Hydra hits the field, the player may choose which goes on the stack first, and as such the player could choose to put the graft ability on the stack first, then the land fetch ability from the Hydra on top of that.
2) When the ETB land fetch ability resolves, a land ETBs and triggers the Sage's triggered ability, thus placing a proliferate ability on top of the stack (and thus on top of the graft ability already on the stack). Then as the proliferate ability resolves it could then choose the Llanowar Reborn and give it an extra +1/+1 counter. At this point the graft ability is still on the stack and hasn't done anything yet.
3) As the graft ability on the stack resolves, a +1/+1 counter is removed from the Llanowar reborn and placed on the Hydra, leaving a +1/+1 on the Llanowar Reborn as it had two on it prior to the graft ability resolving. If the triggers had been sequenced in the opposite order, the Llanowar Reborn would be left with zero counters, correct?
Bonus) If at the start of this scenario the Llanowar Reborn had no +1/+1 counters on it, but there was also a Nissa, Who Shakes the World on the field as well, the Nissa could use it's (+1) to turn the Llanowar into a creature (so long as it wasn't already), it would gain three +1/+1 counters, and those three counters could then be grafted away, correct?
If a Nissa gives a Llanowar Reborn three +1/+1 counters before Ulvenwald Hydra is cast, then the scenario is just as if the Llanowar Reborn started with three +1/+1 counters instead of one. You could do the same thing. And if you grafted first, you could proliferate the animated land after that.
Nissa's ability can't interject during the process after you cast the creature like the Hydra, because there's something on the Stack.
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