yugioh cards that raise level Time Passage “Increase the of 1 face-up 'Fortune Lady' monster you control by 3, until the End Phase.” – @yugiohcardsdaily on Tumblr Level | Yu-Gi-Oh! Wiki |

It's clear why Urza deserves to be number one on this list

Access to a deep card pool

thats huge!but also, three toughness makes it a bit thin and able to be taken out by smaller creatures or spells

Yennett makes for an interesting deck-building conceit as her ability to cast cards without paying their mana cost only applies to cards with odd mana values

165 Card Types : Including Commons (C), Uncommons (U), Rares (R), Double Rares (RR), Art Rares (AR), Super Art Rares (SAR), and Ultra Rares (UR)

Its also a fun option to bring into play when you need some backup, since its special ability lets you summon the Fiend Megacyber when your opponent has at least two more monsters in play than you do