Burn Them All (Red)

Go again

Once per turn, when a dragon you control attacks, it deals 1 arcane damage to each opponent.

At the beginning of your end phase, put a raze counter on this then destroy it unless you banish a red card from your graveyard for each raze counter on it.

Rulings

From the Uprising release notes

A red card is a card with a red color bar (usually at the top of the card).
If you attack with a dragon, then play Burn Them All, then attack with a second dragon, the second dragon attack will still trigger the effect of Burn Them All.
The first triggered effect triggers when a dragon attacks (when the dragon is considered to have attacked), during the attack step of combat. It will still resolve even if the dragon ceases to exist (e.g. phantasm).
You may choose not to pay the cost of banishing red cards from your graveyard. If you choose not to, it is destroyed.
You can not resolve “part” of the effect of banishing red cards from your graveyard. You can not for example, only banish 1 card when there are 3 raze counters on Burn Them All.
If you have 2 or more Burn Them All in the arena, each end phase trigger is resolved and paid for separately. Banishing cards for one Burn Them All, does not prevent another Burn Them All from being destroyed.

Keyword notes

Go again - Go again allows multiple actions to be played in a turn when usually playing an action with use up your action point, and therefore end your turn. A card with go again gives the controller of that card or activated ability 1 action point when it resolves.

When an action with go again resolves, its controller gains 1 action point.
Multiple instances of go again on the same card or activated ability do not stack. If a card or activated ability has multiple instances of go again when it resolves its controller gains 1 action point only.
If an action with go again does not resolve, its controller does not gain 1 action point.
You cannot reveal a card with no to Belittle. The card must have a value to its power that is 3 or less. (0 is a value)