You can fizzle removal
Lorwyns (2007) Card not found is a bit on the expensive side for this effect, but it also clashes, which means you might be able to use it again
Ruby is actually another control-oriented colour, using evasive characters to rapidly quest while disrupting the opponents board through high-power challenges and some of the few outright removal cards available in Lorcana
It just really drives home the fact that Rankle is kind of a sadistic SOB

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Any card in your deck that is not a Sliver should already have it's value questioned by you