And, for any typal decks focusing on a single creature type, the added changeling token gives you one more to add to your stockpile
For five mana, he gives all your Elves +3/+3 and trample until the end of turn
Everything You Need to Start Playing Commander
Lich's Mastery Heres the ultimate version of Lich that actually sees some play

The time has come for me to share my findings: Creatures (17) 1 Voidmage Prodigy 1 Azami, Lady of Scrolls 1 Patron Wizard 1 Supreme Inquisitor 1 Information Dealer 1 Vedalken Aethermage 1 Sage of Fables 1 Sigil Tracer 1 Stonybrook Banneret 1 Delver of Secrets 1 Archaeomancer 1 Goblin Electromancer 1 Melek, Izzet Paragon 1 Jace, Vryn's Prodigy 1 Jori En, Ruin Diver 1 Aberrant Researcher 1 Docent of Perfection Lands (38) 8 Mountain 11 Island 1 Volcanic Island 1 Remote Isle 1 Smoldering Crater 1 Riptide Laboratory 1 Lonely Sandbar 1 Forgotten Cave 1 High Market 1 Mikokoro, Center of the Sea 1 Miren, the Moaning Well 1 Steam Vents 1 Swarmyard 1 Tolaria West 1 Cascade Bluffs 1 Reliquary Tower 1 Command Tower 1 Sulfur Falls 1 Desolate Lighthouse 1 Temple of Epiphany 1 Wandering Fumarole Spells (44) 1 Brainstorm 1 Whispers of the Muse 1 Impulse 1 Serum Visions 1 Peer Through Depths 1 Mana Geyser 1 Eyes of the Watcher 1 Long-Term Plans 1 Mana Echoes 1 Amnesia 1 Library of Lat-Nam 1 Shattering Pulse 1 Overmaster 1 Telling Time 1 Quicken 1 Reiterate 1 Pongify 1 Haze of Rage 1 Mystic Speculation 1 Cryptic Command 1 Ponder 1 Diviner's Wand 1 Rite of Replication 1 Preordain 1 Red Sun's Zenith 1 Chaos Warp 1 Spelltwine 1 Cyclonic Rift 1 Epic Experiment 1 Firemind's Foresight 1 Rapid Hybridization 1 Interpret the Signs 1 Polymorphist's Jest 1 Dig Through Time 1 Impact Resonance 1 Mob Rule 1 Anticipate 1 Jace's Sanctum 1 Pyromancer's Goggles 1 Fiery Confluence 1 Mizzix's Mastery 1 Mystic Confluence 1 Rise from the Tides 1 Geistblast One thing Im concerned about is I have few ways to gain life

I guess this one could be interesting, as it lets you immediately cash in some of the stronger cards but I think it might just be a 99 card