Use Gateway to Chaos to be able to get a Gaia from your deck. Using it early is more beneficial due to the field spell's effects. Best time to summon Gaia is when/if you get first turn, and you have Champion's Vigilance in your hand. This lets you control what your opponent can summon or spell/trap cards to activate.
You can't activate Champion's Vigilance the turn you summon Gaia with the skill. This is because the skill lowers Gaia's level.
Champion's Vigilance can't negate flip effects, unless they are flip summoned. This means that if you attack cards like Hane-Hane, you won't be able to negate it.
Make sure you activate Electro's effect first before performing any action. If your opponent uses cards like Enemy Controller, or Windstorm of Etaqua, then you can at least still switch position after the effect.
Best time to use Electro is when your opponent only has 1 or 2 spell/trap cards. This makes it less likely that you target bad spell/trap cards.
As part of the backup to the deck, you can use Relinquished. It allows you to be able to handle monsters that have higher attack than Gaia can handle.
If you aren't sure you want to risk Gaia or you don't have CV yet, then summoning Senju can be better. You can use him to attack your opponent's face-down monsters to know what sort of deck they are playing.
You can also go for a surprise play by using Gateway to Chaos first. Once it has 3 counters on it, you can activate the field's effect, then summon Senju to get Relinquished when your opponent doesn't expect it.
You can use Relinquished's effect to take your opponent's face down card. This allows you to deal damage to your opponent whenever Relinquished takes some damage. This is good for when your opponent has lower LP than you. Attack into their enemy using your 0 or low attack Relinquished to end the duel.
You won't be able to use the skill as easily or frequently using this, but it can be more usable than Supremacy Berry.
I made this deck but found it inconsistent with around 45% win rate at best, I changed it to the deck below and have forged this deck through many duels and disasters, this new deck now has an 80 percent win rate all through platinum 3 and got me to KOG.
... destroy these cards, as said. My reasoning for running storm is that you essentially always have a field spell, which can search for your ritual spell, but also serve as storm-fodder. Wild Tornado pairs very well with Storm as you get a free monster removal. These cards has been very clutch against, for example, Mask of the Accursed in weevil decks.