At the beginning of your end step, you may return another creature you control to its owners hand, then put a number of +1/+1 counters equal to that creatures power on First Responder
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And then there are the series of white-aligned zombie tokens from Amonkhet, the Egyptian mythology-themed set, whose Embalm mechanic reminds us that mummies are really just a cultural subset of zombies (except of course for the Unhinged joke card Working Stiff)
Colorless isnt a color (its literally a lack of color) and the Tower specifically says that it generates mana of your commanders color identity
Aim for most of your monsters to be levels one to four, with just a couple to a handful being level five and up
If you open up an Elvish Archdruid for example, its very obvious that you want to jam a bunch of Elves into your deck