Cards that make small creatures unblockable
Having access to mana is great, but overall, pretty useless without cards to use that mana on, which is why card draw is equally (if not more) important than ramp
The White rare two-drop gives you hexproof, cheaper than Ivory Mask, and a harder to burn body than Aegis of the Gods or Keen-Eared Sentry
MOM has a bonus sheet, Multiversal Legends (MUL), consisting of reprints of legendary creatures, some of which (like Atraxa, Praetors' Voice or Ragavan, Nimble Pilferer) are long-time MTG staples
We'll be giving this my normal Top Ten and then three honorable mentions
Legendary Creature - Human Wizard Noble Color tag templates(None) Lightning, Army of One First strike, trample, lifelink Stagger Whenever Lightning deals combat damage to a player, until your next turn, if a source would deal damage to that player or a permanent that player controls, it deals double that damage instead