The sleeves will give themselves up to protect your cards, and if you rip one of the sleeves, just replace it and move along
Deepchannel Duelist meets the mana cost of the best lords here, and white works well with merfolk, so while that color keeps it out of some decks, it works great in the ones that can cast it
If you feel you can spare a basic land, Rogue's Passage gives you another option for making a creature unblockable (that might even be better than Access Tunnel).
Not only that, but it is immensely powerful
Guttersnipe Adding a spells matter theme to your Goblin deck can pay huge dividends depending on who your commander is, and this unassuming little outcast boy or girl in the streets of a city (which is the definition of the word guttersnipe) is one of the main reasons why
Whenever you gain life for the first time each turn, put a +1/+1 counter on this creature