If you're interested in using imagery in your promo designs, take a look through the Dreamstime catalog here (opens in a new window), or call for help to make the right choice
If heads, prevent all effects of an attack, including damage, done to Nemea lion during your opponent's next turn
Also the international version will be available in select markets in North America (including the US and Canada), Latin America and EMEA (Europe, Middle East & Africa)
(Of course this effect is very small- it would take something like 20 heads in a row before one should start thinking the coin is biased, unless you were given it by an exceptionally untrustworthy friend.) The same principle applies to Magic
However, if I did have to choose, Id say people hold onto their reds harder than they do their greenespecially when it comes to the PSA 10s