With high-level tournaments seeing 80%+ and 70%+ appearances of Jace and Stoneforge Mystic in decks respectively, there needed to be a drastic change to the format
He wanted to avoid making another cycle of chimeras and wanted to make use of the spikes +1/+1 counter synergies by moving counters onto other creatures
What are your wildest experiences with Planechase
Also, once the ability is on the stack, even if the creature with the mechanic is removed from the battlefield or combat one way or another, the smaller creature will still get the +1/+1 counter as long as its power is still less than the Mentor creatures was as it last existed in combat
Sure, draw it in the late game and you may be out of targets, but peel this within the first 10-12 cards and youre likely to quell any early offense or defense your opponents putting up
Since the primary way to win with a Me deck is through commander damage, making it unblockable makes it hard to interact with