Aboleth Spawn is the most expensive card in the deck
That is what Aggressive Ninjas is all about, abusing the insane search power and wide berth of the Ninja archetype to search out whatever answer you need, then continuing to generate even more free card advantage
The reason this card is number 1 is because, any time you roll the wrong way, you can just say Nope! And try again
While there have been many cool Birthing Pod decks at various points, the final nail in the coffin was Erik Peterss Grand Prix Omaha 2015 list, one of many big GP finishes for Pod near the end of its Modern Career: Creatures (29) 4 Birds of Paradise 1 Eternal Witness 3 Wall of Roots 1 Orzhov Pontiff 1 Shriekmaw 1 Reveillark 3 Kitchen Finks 1 Murderous Redcap 2 Noble Hierarch 1 Linvala, Keeper of Silence 1 Scavenging Ooze 2 Restoration Angel 1 Sin Collector 3 Voice of Resurgence 1 Reclamation Sage 3 Siege Rhino Lands (23) Spells (8) While some Pod decks focused on assembling intricate combos, this build is a great example of the value approach, primarily focusing on exploiting enters-the-battlefield and death triggers while making extremely good use of the toolbox Birthing Pod enables
In fact, I learned the rules of Magic: The Gathering through an older version of its mobile app
This helps you avoid surprises like hidden scratches or off-center prints