gift a card mtg of Immortality | Theros Foil | Modern Then each player returns all creature cards from their graveyard that werent put there this way to the battlefield. Gifts Given Magic the Gathering

Unglued does everything over-the-top, so Spark Fiend is basically mocking the sheer amount of text that some M:TG cards have

[136] A limited set of land cards in the Secret Lair featured paintings from Bob Ross, licensed through his estate

For example, some Final Fantasy cards are only legal in Commander, while others are Standard legal

Their trigger reads, Whenever a land enters the battlefield under your control, you may gain control of target creature for as long as you control Roil Elemental. So, basically, as long as you can keep Roil Elemental alive, you can absolutely steal every other Creature on the battlefield

A word to the wise, though: eventually, your opponents will kill this