Anything without a Magic back or a double-faced card is not, in the current rules, legal in Legacy
Japanese text is worked into the design across the dragon
Converting life into mana is one of the most broken things you can do in Magic (see: Phyrexian mana), and this legendary artifact even spots you a free land drop from the top each turn
Read your game state because chances are the more powerful thing to do is replay lands, but self-milling and milling are bread and butter for some Sultai commanders, or it's own flat out win condition
If in-person learning is more your thing, you can also use this event locator to find a local Pokmon league where a more experienced trainer can get you started
This mechanic is commonly known as a gacha system and has attracted attention from public health scholars and regulators due to its similarity to gambling, having documented links to problem gambling