The support enables it to summon Blue-Eyes white Dragon in possibly the first turn.
There are two ways to play this deck: Using Link monsters or going traditional format. This deck is normally used to play with your friends and to have fun.
You want to have these cards in your starting hand: Protector with Eyes of Blue, Sage with Eyes of Blue, Dragon Shrine, Silver's Cry, and Fusion Substitute.
Another starting hand that is good is: Blue-Eyes White Dragon, Blue-Eyes Alternative White Dragon, Sage with Eyes of Blue, Cards of Consonance, and The White Stone of the Ancients.
With the second hand, you would reveal Blue Eyes White Dragon to summon Blue-Eyes Alternative White Dragon, or use Cards of Consonance discard White Stone of Ancients and draw 2 cards, then you can do the aforementioned activation. Then, you would do your End Phase where you activate White Stone of Ancients first effect:
"Once per turn, during the End Phase, if this card is in your Graveyard because it was sent there this turn: You can Special Summon 1 "Blue-Eyes" monster from your Deck.