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Its the lowest mana-cost version of this effect (with 0 drawbacks) in existence

While power and toughness are CDAs (character defining abilities), they are not fixed

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The best thing about an effect like Feast of Sanity or Glint-Horn Buccaneer is they broaden our focus from effects that let us discard for profit to just effects that let us discard. This opens the door wide to generically powerful, consistency-enhancing effects like cycling, looting, windfalls and of course, wheels

Note that something like Merfolk Branchwalker wont work with this mana base, however it would in a version eschewing Goblin Chainwhirler in favor of Legion Warboss