(A Mutagen token is an artifact with " , , Sacrifice this token: Put a +1/+1 counter on target creature
Once you have your cards sorted, go online and pull up a card appraisal service or market, like TCGplayer, MTG Price, or Card Mavin
Since the entire point of playing a mana ramp card is to be able to play more expensive spells as quickly as possible, any variable that can slow down your ability to take advantage of these pivotal spells on curve can cause a surprising amount of harm in a worst case scenario
Then there was Ash Zealot, which had not only first strike , but also haste and a Snapcaster Mage hosing ability, which made it a Standard staple
Thats how you know were in the hall-of-fame tier of the Magic gifts list
The only question is the optimal number of Islands