To make it happen, we will need a) two creatures we control continuously since the beginning of our current turn, one of which whould be fatter than 2, and b) excellent knowledge of the rules
For many, this is THE CARD to collect, and its easy to see why
[Card Types] OP04-032 Baby 5 OP05-004 Emporio Ivankov OP06-016 Rays Max OP06-090 Doctor Hogback OP08-040 Atmos ST04-002 Ulti ST05-002 Ein ST13-012 Makino P-072 Ryuma P-073 Sabo P-074 Portgas D
Phantom Train is the gold standard, often running away with games in a few attacks due to the lack of good removal
While its possible they are also getting it from Bulbapedia, it seems more likely they would be using a resource in their own language and perhaps that one is better sourced
A tapped creature is very unlikely to be damaged by anything, so this looks very close to a 1-mana Claustrophobia