My question is when serene master becomes a 15/2 and Rhino become a 0/15, does rhino's passive ability then give him +10/+10 again (making him a 10/15), or does it stay a 0/15 and die? (I guess it would be the same as eidolon of countless battles. But there were no rulings on that either)
Thanks for any help, I can normally google this stuff, but no one really talks about serene master.
608.2g
If an effect requires information from the game (such as the number of creatures on the battlefield), the answer is determined only once, when the effect is applied. If the effect requires information from a specific object, including the source of the ability itself, the effect uses the current information of that object if it’s in the public zone it was expected to be in; if it’s no longer in that zone, or if the effect has moved it from a public zone to a hidden zone, the effect uses the object’s last known information. See rule 112.7a. If an ability states that an object does something, it’s the object as it exists—or as it most recently existed—that does it, not the ability.
Serene Master's ability exchanges the power of two creatures. In this case, "each value becomes equal to the previous value of the other", and "a continuous effect is created setting [each] power ... to the other value (see rule 613.3b)" (C.R. 701.10g). (Note here that to determine the "previous value" of each creature's power, in general, its "current information" is used [C.R. 608.2g]. Note, however, that if either creature isn't on the battlefield, the exchange will fail [C.R. 701.10a]; see also this thread.)
Crash of Rhino Beetles's second ability modifies power and toughness ("gets +10/+10") under certain conditions (C.R. 613.3c).
In this case, the exchange applies before the "gets +10/10" effect.
For example, assume Serene Master is 0/2 and Crash of Rhino Beetles 15/15 and the latter's controller controls ten or more lands (C.R. 109.5). When Serene Master's ability resolves, those powers are exchanged; that is, Serene Master's power becomes 15 and Crash of Rhino Beetles's power 0 until end of turn (C.R. 701.10g, 613.3b). Next we apply the effect of Crash of Rhino Beetles, making its power 10 until end of turn (C.R. 613.3c).
So I have read the ruling for Serene Master: "Any power-modifying effects, counters, Auras, or Equipment will apply to the creatures’ new powers".
I also read the ruling 608.2g which I posted below.
The scenario is Crash of Rhino Beetles attacks and Serene Master blocks.
My question is when serene master becomes a 15/2 and Rhino become a 0/15, does rhino's passive ability then give him +10/+10 again (making him a 10/15), or does it stay a 0/15 and die? (I guess it would be the same as eidolon of countless battles. But there were no rulings on that either)
Thanks for any help, I can normally google this stuff, but no one really talks about serene master.
608.2g
If an effect requires information from the game (such as the number of creatures on the battlefield), the answer is determined only once, when the effect is applied. If the effect requires information from a specific object, including the source of the ability itself, the effect uses the current information of that object if it’s in the public zone it was expected to be in; if it’s no longer in that zone, or if the effect has moved it from a public zone to a hidden zone, the effect uses the object’s last known information. See rule 112.7a. If an ability states that an object does something, it’s the object as it exists—or as it most recently existed—that does it, not the ability.
Crash of Rhino Beetles's second ability modifies power and toughness ("gets +10/+10") under certain conditions (C.R. 613.3c).
In this case, the exchange applies before the "gets +10/10" effect.
For example, assume Serene Master is 0/2 and Crash of Rhino Beetles 15/15 and the latter's controller controls ten or more lands (C.R. 109.5). When Serene Master's ability resolves, those powers are exchanged; that is, Serene Master's power becomes 15 and Crash of Rhino Beetles's power 0 until end of turn (C.R. 701.10g, 613.3b). Next we apply the effect of Crash of Rhino Beetles, making its power 10 until end of turn (C.R. 613.3c).