Check out our guide on How to Print MTG Proxies That Feel Real
The Effigy is a four-drop artifact that taps for one mana, obviously a bit pricey
Burns can also be removed by Trainer card effects, Evolving, or moving to the Bench
If an effect allows you to spend mana as though it were mana of any color or type, that allows you to spend mana you couldn't otherwise spend, but it doesn't change what mana you spent to cast the spell
With Charizard ex becoming one of the dominant cards of the metagame, expect this one to make some appearances in decks soon
Not everyone can afford to own every card, and if you want to pretend something else is an Underground Sea for testing or on your kitchen table, that's great