Another card that wasn't available to Modern players until it was reprinted in M20, Goblin Ringleader is our best play for card advantage
Though the characters initial willpower isnt incredible, you can boost it by playing cards that grant Support - which adds an amount to a characters willpower total
These common and uncommon cards usually follow the magic color wheel example: Red is all about throwing fireballs at your opponents things, Green is about big creatures with trample, etc
The options are endless, and Tiamat works wonderfully alongside an Omniscience to put those Dragons into play for free
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Its also important to note that it wasnt considered a keyword back then, just a normal descriptor of an attribute that some permanents had, up until Darksteel