In Tidus, Yuna's Guardian and Yuna, Grand Summoner you get either card draw capability or ramp and counter generation
Shadowmage Infiltrator Another relic of MTGs past, Shadowmage Infiltrator has relevant evasion built in, and it draws a card whenever it connects
Control and Disruption: Blue's inherent control theme meshes well with ramping
Fun Ranking: Very Fun Tinybones, Bauble Burglar The third version of Tinybones, and this one is a lot less salt-incuding, but discard decks are still awful to play against
It also triggers whenever the gift triggered ability of a permanent that player controls resolves
There's the concept of virtual card advantage, which basically equates getting rid of dead cards as effectively the same as drawing cards