While Najeela could fit here, other legends like the new Heroes in a Half Shell from the Teenage Mutant Ninja Turtles Commander does similar things as does the much more narrow Kyodai, Soul of Kamigawa (still upset with that design)
Trading this away early gives you a bit of flood protection and even synergy with cards like Inti, Seneschal of the Sun or Currency Converter
There are cards that trigger other special abilities whenever you sacrifice a land (like making extra creatures to fill up your board) and cards with various Landfall abilities that do cool things whenever you play a land (like getting an extra combat step)
But that doesn't change the fact that many cards from unsets don't obey the rules of Magic, and may produce feel-bad moments for players who haven't signed up to play a party game with whacky rules
Unlike other equipment on this list, this was a card that absolutely dominated entire metagames
1,6991,999 , a Jumpstart box around Dhs