venture into the dungeon mtg cards Elite Deck - Bant - Green Blue White - Very Powerful - Modern & Pioneer Legal - Custom Built - Magic The Gathering - MTG Dungeon - All cards

Certainly a Treasure Cruise can be pretty awful in a badly designed deck but at least it still draws cards and can only really be stopped by countermagic

it's a characteristic of the card

its an endearing bit of worldbuilding that makes Theros feel like a rich, breathing world, instead of just some artwork in a trading card game

Artifacts are a great choice

Eye of Ugin gives a static two-mana reduction on all of your Eldrazi, which wasn't super exciting at first when all Eldrazi cost seven or more mana

You can have more than seven cards in hand at any time, but you have to discard down to your maximum hand size during your cleanup step at the end of your turn