Comments
9 totalBut Riptide Rex is much later than the rest of your cards, so leveling Ezreal with Rex is less effective.
Win Condition: I think playing [runecard]Riptide Rex[/runecard] into lvled up [runecard]Ezreal[/runecard] should be already a won game, else there is no point in that combo. So lvling up [card]Ezreal[/card] is the major condition.
Disadvantage of Win Condition: However …
You can play that combo at best in round 6. But a Demacia Ionia Fiora deck is supposed to win already at round 6, independent of such a combo. So you can take one copy of dawn and dusk, but …
So I read some of you spend money on card collection. Since I never considered this option, i dont really know if it would effect the most efficient way how to collect all cards.
However if you collect cards …
When you think that a patch is ruining anything, just imagine that is how game was released. Do you want to play it or not?
If you always think about things you could benefit from in the past …
Ok, lots of interactions on this one
Eat: An eaten Ally or Enemy is untargetable, but all effects will still trigger if conditions are met, i.e.: Start of Round effects...
Regurgitate: An eaten ally or enemy will reappear …
Quote From Hellcopter Just keep in mind... shuffling Zilean over and over into the deck is a bit toxic thou, as it cannot run out of cards and its somewhat impossible to get rid of him. Maybe his second form …
Zilean and his spells:

Maybe Zilean leveled up version should be a 2/4 instead of 1/5, on one side you should be able to easily generate time bombs on the other side not too many.
Zilean: 3 Mana ,1 Strength, 3 Health, 'create a Time Bomb when I survive damage',
Level up: 'I get summoned a second time' -> 1 Strength 5 Health, 'create a time bomb when I survive damage', 'create a Time …