one mana for a creature that taps for one mana is the baseline youd generally expect
During your turn, equipped creature gets +1/+1 and has first strike
Three mana is expensive for this sort of effect, but if youve got something like Pearl Medallion to shave off mana, it becomes much more appealing
Level Up creatures enter the battlefield at Level 0, and have a Level Up ability on them, along with a text box split into three distinct sections, each with their own power and toughness
One of the easiest ways is with flying infect creatures like Flesh-Eater Imp or Plague Stinger
From playing with the heroes such as Yuna, Wakka, and Auron, to even finding uses for the minor moments such as the traveling shopkeeper Oaka constantly asking you for money (though in MTG hes after your counters to exchange for drawing more cards)