Unless an effect allows you to play additional lands that turn, you can play a land card exiled with Compleated Conjurer only if you haven't played a land yet that turn
Im not a huge fan of seeing too many cards that break the legend rule, but Spark Double is still a great card that has tons of appeal in Commander
(2021-04-16) The card exiled by the second ability is exiled face up
The back half, Itlimoc, Cradle of the Sun, taps for green mana equal to your creature count, which is exactly what Gaeas Cradle does
They will only be available in the following products, most of which release August 2nd: Shrouded Fable Pokmon Center Elite Trainer Box (now available for preorder at the Pokmon Center for $59.99): Includes 11 Scarlet & VioletShrouded Fable booster packs
they're more like "active as long as the card stays on the field"