Departed Deckhand

The trade here is brutal in both directions: nearly unblockable evasion in exchange for a body that detonates the moment anyone points a spell at it. That sacrifice clause is the real text on the card, and it cuts further than it first appears, because it fires on any spell that targets the Deckhand, friend or foe. Your own combat trick kills it. Your own aura kills it. An opponent's removal does not so much destroy it as trigger it, which means the cheapest answer to a fragile attacker is to leave it alone and accept the two damage. The "except by Spirits" rider is the second half of the design: this is unblockable in nearly every board state, since Spirit defenders are vanishingly rare, and the activated ability lets it loan that evasion sideways to a real threat for the turn. So the card splits into two jobs that rarely overlap cleanly: a clock that wants to be ignored, and a mana sink that wants something bigger to push through. Pumping or protecting the attacker that the Deckhand is enabling is fine; the catch is that you can never do either to the Deckhand itself without sending it to the graveyard. It is a creature built to make targeting it a self-defeating proposition, which is an unusual way to make a two-drop survive, and a quietly demanding one to pilot, since half the protective tools in any deck become live grenades the moment they touch it.