pokemon card heart gold soul silver HeartGold SoulSilver Energy Switch #91/123 – ART WORK MAY DIFFER FROM PICTURE 3-Pack Blister Prices | Pokemon

If the number of historic cards in your graveyard changes while activating mana abilities, the cost to cast The Capitoline Triad remains what you previously determined

In the context of the card, it appears to be wordplay on the fact that the word "present" can refer to a gift you give to someone (in which case, it's pronounced like "pleasant") or the act of showing something off (in which case, it's pronounced like "prevent"), and the effect appears to be using both meanings at the same time

Rares appear roughly once per pack, and mythic rares about once every eight packs

If you want to watch the announcement video, you can see everything for yourself here

Two mana is a very good rate for this effect, though the downside is the crew cost