Once you have the Decoy Pillar, you can return to the Fossil Graveyard to build massive levels. Simply cast out the Pillar and three Walkers or Independents and let them do the rest. Your cards will last longer because the Baby Dragons will be occupied with Decoy Pillar, which lasts for a decent amount of time, allowing your monsters to kill them without a fight. The Baby Dragons keep appearing, so the experience never stops.
Draxzay.
Go to the Fossil Boneyard and make sure you have two Rheebus cards, one Decoy Pillar card, the Whip Worm card, and either the Cerebus or Hell Hound card. When you enter the board, quickly shuffle through your cards until you get to the Hell Hound card. Go to the right and stand on the blue lit circle. Transform into the Hell Hound and jump up to where the Catobleepas is located. You will get hit by him a few times, it may not be serious depending on your level. Quickly run around until you have both Rheebus cards, the Decoy pillar card, and the Whip Worm card. Quickly place the two Rheebuses next to each other so that they will heal each other constantly. Note: Make sure they are healing each other. If they are not, then hold R and press the button that they are assigned to make them go back to the beginning of the deck and keep running around. Hold R and press the buttons that they are assigned to get them back and try again. If they die, you will have to restart the board. After they are out healing each other, put the Decoy Pillar directly next to the Rheebuses so that it also is being healed constantly. Finally, use the Whip Worm card and stay under the trees the Rheebuses have, so that the Whip Worm card also gets healed. Leave the game idling like this. When you return, they will still be going at it. This is also a good way to make some money. This also works with the Carbuncle card if you do not have the Whip Worm card, but it is not as effective.
Icey04585.
In the first battle arena, defeat all the monsters to get their cards. Go to the second battle arena and defeat the monsters to win cards.