The Onslaught Player's Guide was part of the OnslaughtFat Pack. It included two sample deck lists to demonstrate how new Onslaught cards could be utilized in Standard.
The Onslaught set provides more than enough cards for any race-based deck, and the Soldier deck is no exception. This all-Onslaught deck assembles an army of Soldiers that can beat down any opposition. Together, Mobilization and Shared Triumph have the potential to break a game wide open by beefing up your ever-increasing swarm of Soldier tokens. Get any Soldier together with Catapult Squad and the enemy doesn’t stand a chance. Whipcorder is a nice way to lock down dangerous opposing creatures, while the Gustcloak creatures sail boldly into battle turn after turn. Piety Charm’s ability to give a Soldier +2/+2 in battle can save an attacker or deal those last crucial points of damage. Feel free to customize the deck: Daru Encampment or your favorite Soldiers from other sets would be fine additions.[1]
One of the many Onslaught cycles is a group of creatures that each tap for an effect that depends on the number of creatures in play that share their type. During playtesting, these were nicknamed the “Titania” creatures in deference to the Urza’s Saga card Priest of Titania. In fact, Priest of Titania was actually supposed to be in this cycle, but when combined with the other good Onslaught Elves, it routinely gave players access to six or even eight mana on the third turn. Another version of the Elf card untapped a creature for each Elf in play, but that had the same problem. By targeting itself and some mana-producing buddies, that version of the Titania Elf was also able to produce insane amounts of mana. The development team finally stopped the madness with the simple life-gaining ability of Wellwisher.[2]