Theres quite a lot of text on each card as the designers work to capture their unique character, but it helps if you start by reading the Vehicle side first
The honest risk: Prismatic is a large, popular print run, so its a steady climber rather than an overnight pump
Trickster's Elk overwrites all previous effects that set the creature's base power and toughness to specific values
It's played in 5,593 decks registered over at EDHREC.com which is pretty good for the fun times
What I dont love is a creature with echo or a cumulative upkeep
For example, if you control The Ozolith ("Whenever a creature you control leaves the battlefield, if it had counters on it, put those counters on The Ozolith.") when Sin's last ability resolves, you'll put the appropriate number of each kind of counter onto both The Ozolith and the target creature