Kellan, the Kid is one of many cast-from-somewhere-other-than-your-hand commanders (what I like to call paradox commanders), and the payoff here is casting more stuff for free
If you choose the same land as the target more than once, the most recent effect (and most recent value of X) applies
Goblin Trashmaster is king in Commander, allowing you to mop up all sorts of mana rocks with ease, which Goblin Tinkerer is also good at
$1.79 Oildeep Gearhulk Aetherdrift $1.29 Foundry Inspector Commander Legends $0.99 Squall, SeeD Mercenary Final Fantasy $0.99 Thought Monitor Edge of Eternities Commander Decks $0.99 Matoya, Archon Elder Final Fantasy $6.49 Y'shtola Rhul Final Fantasy $0.79 Thopter Spy Network Aetherdrift Commander Decks $0.79 Serah Farron Final Fantasy $2.49 The Regalia Final Fantasy $0.59 The Valeyard Universes Beyond: Doctor Who $0.49 Noctis, Prince of Lucis Final Fantasy $1.79 Etherium Sculptor Edge of Eternities Commander Decks 0 results found
Beacon of Unrest There was once a time when just about every Black deck I could think of was running this card