whatnot pokemon cards Mystery Pack 11 Collectible Pokémon First Release NYCC 2022 · Whatnot: Shop, Sell, Connect The WhatNot RESELLING Strategy I
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In my opinion, it is the perfect buffer color

Theres no reason to play a Hermit Druid with one basic land in your deck if your best reanimation targets are Amugaba , Delraich , or Craw Giant

It also takes up one of those few precious slots you can afford to have a non ramp, non threat card in
But none of the 1999 ones are not yellow, so it could be plausible I think