A Chaotic Night in VegasHow it works & interactions with other cards

Understanding the Random Modes

When your upkeep begins, the ability triggers and you must randomly select one of three historical playtest cards: Night Out in Vegas, Another Night in Vegas, or Yet Another Night in Vegas. Each of these 'internal' cards functions as a modal choice. Because there are four effects on each of those three cards, there are 12 total possible outcomes that could occur each turn. You do not get to choose which card or which effect happens; the randomness is built into the trigger.

Step-by-Step Resolution

First, the trigger goes on the stack at the start of your upkeep. Upon resolution, you use a random method (like a d3 or rolling dice) to determine which of the three Vegas cards is active. Once a card is selected, you follow the instructions for that specific card's effect. It is important to note that some of these effects might result in you sacrificing A Chaotic Night in Vegas, ending your lucky streak permanently.

Strategy and Timing

Because this enchantment triggers at the beginning of your upkeep, it happens before you draw your card for the turn. This makes it a proactive engine that can provide resources or board presence before you even move to your main phase. However, because it is an enchantment with a recurring cost-free trigger, you should play it when you have a stable enough board to handle a potentially 'bad' roll, such as one that forces a sacrifice.

Interaction examples

Stacking Upkeep Triggers

Phyrexian Arena

If you control both A Chaotic Night in Vegas and Phyrexian Arena, both trigger at the start of your upkeep. Since you control both, you choose the order they are put on the stack. You can choose to resolve the Vegas trigger first to see if you get an advantage, then draw your card and lose 1 life from the Arena.

Resource Management

Black Market Connections

Note that Black Market Connections triggers at the beginning of your first main phase, whereas A Chaotic Night in Vegas triggers during your upkeep. You will always resolve the random Vegas effect first. This is beneficial as the Vegas effect might provide you with the life or mana needed to safely pay for the aggressive 'Buy Information' or 'Hire a Mercenary' modes later in the turn.