Secure the Wastes
 
This rather reminds me of Conflux's Martial Coup, as the token generator of choice for this generation's slower or mana-rich decks. And while you don't have the the option of the sudden 180-degree turnaround that Martial Coup could sometimes be, it's still good enough to overrun people, either with that literal card or Elspeth's emblem or something similar. In a deck with enough Warrior tribal effects, just casting it for three or so tokens in the midgame is actually not bad, either.
 
Constructed: 3/5
Casual: 3/5
Limited: 4/5
Multiplayer: 3/5

Today's card of the day is Secure the Wastes which is a one White mana and X instant that puts X 1/1 White warrior tokens into play. This is a fantastic card that while minimally useful early on in most situations is a serious battlefield changing play the later it is used.  With any kind of support such as mana acceleration or swarm enhancement this is a top of the line card that will see play across most formats.
 
In Limited this is a clear and easy first pick in Booster and starting point in Sealed that can be splashed into another color if necessary with only one White mana in the casting cost.  One of the best topdecks available and a potentially game winning move depending on what effects are available this is a top card in the format.
 
Constructed: 4.0
Casual: 4.0
Limited: 5.0
Multiplayer: 4.0