The main reason a high hand advantage is important, though, is to facilitate the effects of two of the archetype's trump cards, Brionac, Dragon of the Ice Barrier and Gungnir, Dragon of the Ice Barrier. Brionac can return any card to its owner's hand at the cost of discarding one card for each returned, while Gungnir can destroy up to two cards per turn at the cost of discarding the same number. By keeping a strong hand advantage, Brionac can make way for an OTK, while Gungnir can keep the pressure on your opponent, giving them fewer and fewer options while you constantly destroy their cards.
Other good non-archetypal cards to use in an Ice Barrier deck are Crystal Seer, which helps keep hand advantage (but also gives you the bonus of not having to waste a draw on what could be a dead draw down the line), as well as Gozen Match, due to the fact that the entire archetype is composed of the WATERAttribute.
One last little trick comes from adding "Wetlands" into your deck as it makes all Level 2 or lower Aqua-Type monsters gain 1200 ATK, making "Dewdark of the Ice Barrier" 2400 ATK and "Cryomancer of the Ice Barrier" 2500 ATK. In other words you can't be attacked except by Level 3 or lower monsters, which shouldn't be able to kill "Cryomancer", and "Dewdark" can deal 2400 each turn directly.
One of the most used Ice Barrier decks, the General Rush focuses on using Magic Triangle of the Ice Barrier to special summon General Grunard of the Ice Barrier. Then using his effect to swarm the field with other Ice Barriers, and lock your opponent. This deck can synchro summon anything from level 5 to level 10, through the use of Dewdark, Geomancer, and Cryomancer, but it should not be the main focus of the deck.
This deck is a OTK base combo usingthe Ice Barrier General's and polmerzation along with an elemental hero. Fusing form the hand then summoning ice edge to attack. Making a attack chian with mask change but de-Fuison absolute zero before hand leaving you opponent wide open. With the right monster and a de-fuison you hurt you opponents life points with a devasting blow. This is a heavy spell card based deck it also relies on the graveyard. So card like anti-spell fragrance and macro cosmos would hurt the deck. Thunder king raihoh slow the deck downsince searching keep the deck fast but a side of super polmerzation and shinning can stop that a little. BY: T~Wade