If youre wanting to play a long game, going with the +1/+1 counter is best, since you can use its ability to really decimate the opposing board, but if youre looking to win within a turn or two, then going with Haste is the better option
If it's a creature, it has haste.) Instant Instant (CTRL to add secondary) Land Spinerock Knoll Hideaway 4 (When this land enters, look at the top four cards of your library, exile one face down, then put the rest on the bottom in a random order.) This land enters tapped
It can get out of hand quickly if left alone, but it is still fair and interactive
Be ready to bust any investigation wide open with Deadly Disguise
If you enjoy unusual combo archetypes, Pioneer Scapeshift could be right up your alley