If you start with 200, it would be impossible to have 200 or more cards in your library.Drunk Cynic Drunk Cynic2017-03-20 23:18:18 +00:00Commented Mar 20, 2017 at 23:18 2Well, if you play a [mtg:Battle of Wits], in response use the ability of [mtg:Feldon's Cane], and in response play [mtg:Kaervek's Spite], a 202 cards deck is possible
Isochron Scepter Isochron Scepters mostly known for being broken
Discard effects can go even further, eating away at your opponents hand each turn to deprive them of resources in the long game
This card saw tons of play during the Arceus & Dialga & Palkia-GX era when that card was everywhere
Etali, Primal Storm CMC: 6(RR) Type: Legendary Creature Elder Dinosaur First ability: Whenever Etali, Primal Storm attacks, exile the top card of each players library, then you may cast any number of nonland cards exiled this way without paying their mana costs
It hits around halfway in my chart