Trap choices for Hunter
Solution 1:
Explosive trap does 2 damage to all enemies. That includes the enemy player, which is why it is in the Face Hunter.
Frost trap returns an attacking enemy minion back to their hand. If the trap returns a 5 mana or more minion, that's a large tempo swing (5 or more mana) for the cost of 1 card.
Snake Trap is mostly about combos. Knife Juggler, Starving Buzzard, Scavenging Hyena, Timber Wolf.
Misdirection and Snipe are about plan disruption, rather than outright card, tempo, or combo advantages.