You have the giant the witch the valkrie the poison the skeletons the minions the spear goblins and the goblins. If you do not have the poison you can use the fireball or the rage.
The giant is the main damage dealer and the main tank in the deck
The witch is great when paired with the giant to splash away troops that they use to try and take out your giant
The valkrie is one of your main defensive cards, if you do not have the witch in rotation you can put the valkrie behind your giant. If your opponent has a witch giant deck also then take out the witch by using the valkrie.
The poison is your direct damage, it is great against spawner decks and it can be used to take out minion hordes or lava pups.
The skeletons are a cheap card, they can be used to take out giants and hogs. If you surround a low health musketeer it can take her out. They can also be used to cycle through your deck.
The minions can be used to take out the balloon, the lava hound and pups, and the baby dragon once it has locked. If you know that your opponent has a valkrie to counter your witch giant push then wait until your giant starts to be targeted by the crown tower and then place your minions at the bridge to protect your witch from the valkrie. They will also do massive damage.
Spear Goblins are cheap card that can target air, if you do not have a good starting hand but you have the spear goblins then simply place them at the bridge. They can do hundreds of damage depending on their level.
Goblins are a cheap troop that can be used to counter the hog the giant the pekka and the mini pekka along with many other cards.
If you are facing the hog trifecta then take out his valkrie with your minions and then surround the hog and musketeer.
If you are facing a giant witch deck then put the valkrie down to counter his witch and then surround his giant with minions goblins spear goblins and the one elixir skeletons.
My nickname is Legend
If he is using an elixir pump then simply start a push and then poison both the tower and the pump.