The Spikey-Eared Pichu card was created as an entry for a drawing content held across a dozen children's magazines in Japan during 2009, as part of the promotion around Pokmon movie Arceus and the Jewel of Life
The mass-trample is cheap and useful, but the other ability is pretty iffy
Collectors can find this card in booster packs, booster boxes, or through individual sales, but should always carefully assess its condition before purchasing
We were experimenting differently throughout the day, and this is what I would recommend going forward
(Ouch!) Also, the fact that the creature slowly grows over time meant that development could be a bit more aggressive in the costing, as you won't immediately have a giant flying trampler
And be careful, you can add micro-scratches if you press too hard