Reliquary Tower is probably played too much , but it excels in decks designed to draw tons of cards
Ruthless Technomancer is an interesting combo because youll sacrifice your big Juri, generate lots of Treasure, cast it again, sacrifice all the Treasure for mana, and have your commander again ready to fight, almost as big as it was before
Ive seen that card plague Standard now on Arena, in combination with Yorion, Sky Nomad and Agent of Treachery
This is the kind of effect that defines green Auras for MTG strategies built around counters
This effect works best in multiplayer games, such as Commander, where the likelihood of a player choosing to let you draw a card rather than paying the one mana is much higher
Theyre Red so that might matter, but usually you can the tax or other symbols with them anyway