However, if a single creature with lifelink deals combat damage to multiple creatures, players, and/or planeswalkers at the same time (perhaps because it has trample or was blocked by more than one creature), the ability will trigger only once
By the time you put in enough creatures to make your noncreature spells cheaper, you run out of room for the noncreature spells
It seems possible that some of the locks, like Glacial Chasm in Legacy or Phyrexian Unlife in Modern, actually end up being playable because they are pretty efficiently costed
That does not mean I wont be adding these cards to my collection though, in fact its quite the opposite
These effects, as well as proliferation using Lulu, Stern GuardianLulu, Stern Guardian and similar cards, are critical to Cryptic Trilobite's success