It's not that Triskelion has become a strictly inferior version, but Walking Ballista has become superior in terms of ease of use
If a shapeshifter enters the battlefield as a copy of a legendary creature, the legend rule will apply to it unless stated otherwise
There's a big difference between a combo being cool enough to trigger a spike and it actually being effective to use in a game
Put an ingredient counter on this enchantment, then put an ingredient counter on it for each card drawn this way.Whenever you cast a creature spell, that creature enters with X additional +1/+1 counters on it, where X is the number of ingredient counters on this enchantment
While rivals drown in card chaos, your black lotus, blue eyes, ring, shining dragon, rest in armored chambers, await glory
Then, you cannot play Character cards with a base cost of 7 or more during this turn