In those days when the only delve threat was Tombstalker, before Deathrite Shaman, Ragavan, Nimble Pilferer, and the like highlighted peak efficiency among 1-mana threats, Mongoose was the card that let you slowly whittle down your opponents when your Delver of Secrets and Tarmogoyf were too vulnerable to removal
a three-cost do-nothing turn can be bad for tempo decks, and the lack of haste means the enemy will have time to respond
Honestly, the proxy itself looks pretty stunning with the Kaladesh Invention finish
When this was first spoiled everyone had the same reaction: "You can do that?" It was news to us, but we quickly adapted and set to work making beatdown decks that could reliably put this down on the second turn thanks to the vast array of newly available dual lands
(It can't be the target of spells or abilities.) Equip Artifact - Equipment Color tag templates(None) Protection (CTRL to add secondary) Ramp Qty: 17 Price: $14.75 Arbor Elf Creature - Elf Druid Color tag templates(None) Arcane Signet : Add one mana of any color in your commander's color identity
Creature - Warrior Elf Color tag templates(None) Hornet Queen Flying, deathtouch When this creature enters, create four 1/1 green Insect creature tokens with flying and deathtouch