Mulligans
General Mulligans
Mad scientist: good value and for trading
Ursatron: good curve and draw
barnes: usually gets something good
animal comp: good card
play dead: very good to activate early combos like Barnes, coin, play dead or just creep for a good use.
dr 4: just good tempo and value
quick shot: board control
Play umbra plus nine lives discovering oblivitron with sneeds in hand then cube on sneeds for lots of value. Total cost is 12 mana so you have to emperor at least two of the cards.
Autocorrect at mulligans “creep for a good use” is supposed top be “keep for a good use”