mtg card limit hand TR&CI 145: How Does Reliquary Tower & The New Winter Interact (Multiple Size Adjusting Things) I thought it could be

I wish I could say the same of Uro

If it has at least one target, and all its targets are illegal when it tries to resolve, then it won't resolve and none of its effects will happen

While many of them would be interesting spaces to explore and delve into from a design perspective, they're still only filled with untapped potential (at least, at the time of writing)

With Arena of the Ancients in play, any legend or Commander that wants to attack or needs to tap to activate its ability is effectively hamstrung

Each of these Hydras has interesting abilities but were ultimately overpowered by those in my actual top ten