You can wrap up the game with big white creatures like Elesh Norn, Grand Cenobite and Sun Titan or take a spicier route with infinite combos like Heliod, Sun-Crowned and Walking Ballista
You could include token doublers like Anointed Procession or Doubling Season to increase their outputs, and use cards like Goldberry, River-Daughter to perpetually be producing tokens each turn with the same saga
1 Imperious Perfect
Green tends to have the biggest creatures at any point in the curve, so it lends itself well to stompy strategies that make use of 2-mana 3/3s like Werewolf Pack Leader and Keen-Eyed Curator and such to outsize your opponents and rush them down
Alexander Gregory As I said before, people want to have their expensive cards stay rare, but some are just too balanced or useful to be left in older sets
You CAN use him as a 22-23 card for your limited deck, but please don't try to break him in constructed