While we dont yet know how this will affect gameplay or deck building, we suspect that the two-color limit will still apply overall, so if you use either (or both) of the two cards shown above, your deck will need to be composed of Ruby and Sapphire cards
Enough effects that do a damage to everyone or every opponent, like End the Festivities and Creeping Bloodsucker, and your 1-drop 1/1s enter as 4/4s
Piglet - Sturdy Swordsman depicts that courage, outfitting him with a wooden sword and shield and a colander helmet
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Smugglers Copter, of course, is a Magic card with a lot of pedigree
Combo is weak and uncommon, there is lots more removal floating around and a 2/2 will just trade badly with any number of similar dorks that have already obtained card advantage (Snapcaster, Trinket Mage etc) or sit on the sidelines and do nothing compared to actual threats people might make