You can cast it large, or you can cast it small, but no matter what, you wind up with a cost-efficient creature
Cards that get beefier the more cards in players graveyards are a fine choice
Venture is a new keyword that will appear on specific cards in Adventures in the Forgotten Realms, and pairs with three dedicated dungeon cards themed around classic Dungeons & Dragons deathtrap Tomb of Annihilation, fifth-edition adventure Dungeon of the Mad Mage and D&D 5E Starter Set adventure, Lost Mine of Phandelver
No, deathtouch cant kill an indestructible creature
A different build would be focused on blink and creatures that have good enter the battlefield effects and higher toughness than power, like Sea Gate Oracle, Brago, King Eternal, and Wall of Omens / Wall of Blossoms
People opening packs of cards will likely get many duplicates of these rarities if hunting for the Enchanted or even Legendary types