A big reason for this is that foil lands were fairly common in Unhinged about one per booster box, on averagebut with Unstable , you had to open three to four boxes (on average) to pull even a single foil basic land
If you manage to have Myutant Beast, Synthesis, or even Ultimus on the field, your opponent will waste precious resources trying to take them out while you negate their card effects
Gem-Knights Monsters(21): 3x Gem-Knight Garnet 1x Gem-Knight Sapphire 3x Gem-Knight Tourmaline 3x Gem-Armadillo 3x Gem-Knight Alexandrite 2x Gem-Knight Emerald 3x Gem-Merchant 2x Gem-Turtle 1x Gorz the Emissary of Darkness Spells(9): 1x Dark Hole 1x Future Fusion 3x Gem-Knight Fusion 1x Giant Trunade 1x Monster Reborn 2x Mystical Space Typhoon Traps(10): 2x Bottomless Trap Hole 1x Call of the Haunted 2x Gem-Enhancement 2x Pyroxene Fusion 1x Solemn Judgment 1x Solemn Warning 1x Torrential Tribute 13
Let's head to the midway
I'm not sure what's going on in Free-for-All, with that giant man with a giant tankard of beer
We changed it from a creature to a noncreature artifact because the ability seemed like it wanted to go on a trinketsome small, magical item you'd keep in your pocket