The most obvious of these factors is the synergy of haste with Saproling Burst, which was known to some as "The Fix." That extra turn almost doubled the strength of the Burst and made it hit for the full 20 damage in only two turns, which would normally mean a kill on turn five, or turn four if backed up by a Blastoderm
The first was Library of Leng, first printed in Limited Edition Alpha , whose text says, There is no limit to size of your hand. In subsequent reprintings, most notably in Revised Edition , the text was changed to You must skip the discard phase of your turn--as if that was a bad thing
Owen Grady taps to put one of four ability counters on a dinosaur, and Blue makes other dinos you control enter with the same counters that it has
Even if you dont combo on the spot, the card provides value by creating copies of good ETB creatures