Icetill Explorer is the complete package, allowing you to play two lands a turn, play lands from your graveyard, and mill them from your library
In conjunction with Naban, Dean of Iteration, it can be incredibly powerful by stealing the opponent's two best creatures, although something like a Lightning Bolt, Path to Exile, or Fatal Push undoes all of our work by giving the creatures back
Growing Rites of Itlimoc / Itlimoc, Cradle of the Sun Rating: 1/10 Growing Rites has seen a good amount of Commander play and is a really cool throwback to Gaea's Cradle, but its just terrible in Limited
For retailers wondering about eligibility, if you do not see the application button on the Melee website, it likely means your store is not eligible for this event
Other spells that synergize with creatures entering the battlefield are also good choices: Warstorm Surge turns those fresh creatures into immediate damage, and Soul of the Harvest generates even more advantage after your creature hits the field
I expect this card to remain one of the most valuable and desirable from Bloomburrow throughout its life in Standard, and possibly even beyond that