When you look at these cards through the lens of minimizing your commanders costs, they start to look even more tempting
Like all blitz creatures, when Tenacious Underdog dies you get to draw a card
The deck additionally features a number of powerful removal and card draw effects, as well as a number of flicker spells that allow your permanents to trigger effects additional times (Cloudshift, Ephemerate, Flicker of Fate, Justiciar's Portal, Long Road Home, etc)
Right now in Standard we have access to Lumbering Falls and Shambling Vent and Ive been super impressed with both
If its a creature or planeswalker card, put it into your hand
Players receive one mana per land card they tap, and the mana only lasts for that turn, although players can tap the same land cards for more mana in subsequent turns