If a card in your hand is already revealed (perhaps because it was revealed to pay a cost of a spell that's still on the stack or due to the effect of a card like Telepathy), you may reveal it again to pay the cost of another spell or ability that requires you to reveal a card from your hand
For example, if the creature card returned by Defossilize is somehow not a creature once it's on the battlefield, it can still explore
Lightning, Army of One This 3/2 Boros aggro lover is next with first strike and trample and lifelink too
Fastbond was extremely abusive long before most of the world caught on but was only legal in Vintage and Legacy (where it was eventually restricted and banned, respectively)
The list runs Chandra, Torch of Defiance and Chandra, Flames Catalyst
Spoiled right in the middle of Uros peak Standard dominance, Omnath, Locus of Creation looked so similar to that other mythic rare bomb that it was immediately red-flagged by most of the Magic community
