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Even rarer than than their non-secret counterparts, these cards have a number in the set that exceeds the set's listed total number (e.g., 101/100)

The final chapter of One Ring to Rule Them All forces each opponent to lose life equal to the number of creatures in their graveyard, which can be pretty darn good if you've milled them enough

Its essentially a Seaside Citadel, but you can put it directly into play by paying and returning a tapped creature (web-slinging, basically)

If White Auracite sticks around, its effectively a 2-for-1 since it works as both a land and removal spell

Colorless Pokemon are okay to use too