In my experience, World Shaper is actually a little short on cards with that effect (surprising since the entire point of the deck is to sacrifice all your lands), so Id also consider adding in a few other spells with a similar ability
Rage Rage was a trading card game based on Roleplaying Game Werewolf: The apocalypse
Wick, the Whorled Mind is a new Rat Warlock debuting in the all-animal Plane of Bloomburrow, and is set to give Commander players exactly what they were asking for with new mana options for Rats
Gilded Lotus Retro Artifact from The Brothers War set Numbered out of 500 This card recently sold for $550 on eBay
[18] Set: Archazias Island Rarity: Enchanted The Enchanted variant of this Action card features sketched drawings of Lilo and Stitch, so many people are already drawn to the simple design
The deck then adds a number of 2- and 3- drop modular creatures, as well as 4 copies each of Steel Overseer and Arcbound Shikari, each of which can add +1/+1 counters to every creature on your team, and 4 copies of Tempered Steel to quickly make your cheaply-costed creatures enormously strong
