Incorrect Rules Interaction
"sword of wealth and power" doesn't protect equipped creature from sorceries such as "sunfall". "Ral's reinforcements" token gets exiled by "sunfall" which is a sorcery despite the swords protection from such.
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Rezzahan#77802 commented
That's because protection entails only four very specific things (which you can remember by the acronym DEBT, see below). Sunfall and other sweepers don't do anything protection cares about, thus you lose your creatures.
DEBT means:
D amage from a source with the protected quality is prevented
E nchanting/equipping/fortifying the protected permanent/player is not possible
B locking by a creature with the protected quality is not possible
T argeting by sources with he stated quality is not possible.Check DEBT and you see that Sunfall doesn't try to do any of that. It doesn't deal damage, it doesn't enchant, it doesn't block, and it doesn't target.