When played (without expending mana), the Mox Emerald grants one green mana per tern
As you might expect, Oko's one of the folks who is wanted, but Oko's poster is twice as scarce as the other wanted poster mythic rares
Here are a few options that each one can search: Trinket Mage - Esper Sentinel, Sensei's Divining Top, Shadowspear Tribute Mage - The Soul Stone, Arcane Signet, Grinding Station Trophy Mage - Buster Sword, Extraplanar Lens, Simularcum Synthesizer Transit Mage - The One Ring, Roaming Throne, Iron Man, Titan of Innovation Tribute Mage - The Great Henge, Knowledge Pool, The Immortal Sun #3 - Harmonic Prodigy Harmonic Prodigy
If you cant get enough and/or the right colors of mana, however, your ability to do more than pass the turn quickly plummets
Its a Pokmon Tool card and will only benefit Fighting-type Pokmon, but it prevents a respectable 30 damage from the opponent every time the Pokmon holding it is hit
Rat-typal decks are a community favorite and have a number of strong options at commander