[UNDER RECONSTRUCTION]
Iroas, God of Victory, is an amazing boros (red/white) creature. He helps you to be very aggressive and deal a lot of damage even with small creatures. He works very well like two enchantments at the same time, providing menace and indestructible for your creatures during your combat phase, with is huge for his starting cost of four. And, being a creature, he is also strong (7/4), strong enough to kill other players with commander damage. This deck works better with a lot of small creatures (CMC 2 and 3) and some enchantments to help you deal more damage. It's a easy way to play, even though aggro decks need more attention in the first 10 rounds if you want to kill your enemies in as soon as possible.
1) Notes
First of all, read all the cards of your deck and try to understand how they should be used. It's very important to you use them as better as possible. Fell free to swith the cards and use that ones you like more, but keep in mind the mana curve and sinergies. My second tip: if you like red and white and an aggro deck, keep in mind what you should expect. For example, red and white aren't good to draw cards, mana ramp and create an army from the dust. So it's important to keep them alive and have some cards to draw cards and rush mana. And it's suppose to keep attacking forever, without fear to be attacked, cause the deck has resources to deal more damage than you should receive, or at least, deal damage enough to kill the player who is an emerging threat to you.
2) The first hand
Like almost all commander decks, would be nice to start with 3 manas and a drop 1, 2, 3 and 4, maybe a mana ramp between them. Especially if you have some permanents, cause this would help you to turn Iroas in a creatura as fast as possible.
3) Early game
Play your manas, your mana ramps and your permanents. And cast Iroas when possible. Even being just an enchantment, he'll help you a lot to deal damage with the small creatures. Note that in this deck I've 66% of the creatures being CMC between 1 and 3, with is almost 33% of the deck, if I avoid the mana. Keep in mind to achieve the devotion needed to bring Iroas to the material plane. He already provide 2 devotion symbols, but don't be illuded, isn't that easy to provide 7 devotion symbols.
Your objetive here is to drop as much things as possible, and almost every creature and enchantment are good to drop as fast as possible. Do your damage. If your hand isn't that good but you have some board wipe, some times could be nice to hold your game and use it to create a better board after the extinction.
4) Mid game
In this moment, you should have creatures and cards to deal more damage and start to kill some players. If you don't, probably this game is lost to you :(
5) Notes 2:
You should have noticed that I've used a lot of creatures with cost 1, 2 or 3, and some of then has 1 or more mana symbol to be cast, wich is very good for Iroas. And some cheap enchantments as well. This is good to help you turn Iroas into a creature as fast as possible. Remember that, if you can't have any hast source, every time Iroas became a creature, he'll need 1 turn to attack.