Esper Sentinel Esper Sentinel did what no card before it could do by giving good, clean card draw to white
For me, this meant that, when I happened upon a copy of Jalira, Master Polymorphist in a twenty-cent bin, I picked it up
Similarly, if the ability causes a permanent with station to become an artifact creature, putting an amount of charge counters on it greater than or equal to the amount required for it to become an artifact creature won't overwrite the base power and toughness set by Depthshaker Titan's first ability
Karn is a great reason to run extra copies of the ring, since some can go in your deck while others go in your sideboard
I love the example thats given in the original
If the discard was something more universal like lands or blue cards instead of artifacts, or always just one card, while retaining its instant cost it would probably get more play than Fact or Fiction, mostly for occupying a slot on the curve in less demand