The shape indicates which set, or edition, that particular card was printed in, and the color indicates the rarity , as follows: Cards printed before the Exodus set in 1998 did not use colored symbols to show rarity, and many of these cards have no set symbol at all
It just makes it a tiny bit less worse
Trample allows a creature to deal excess damage to a player or planeswalker
And since about a week it started climbing even faster, now sitting at about $10 in US markets
More obscurely, mechanics like Banding, where are featured on just three creatures in Limited Edition , Benalish Hero (a common), Mesa Pegasus (a common), and Timber Wolves (a rare), makes very little sense outside of the context of rarity
High powered but not quite cEDH