One more person on the pile of people who find your lack of imagination disturbing. The Heir's studying side first begins to climb further into the tree, observing all its different branches, and trying to piece together the fastest method to get through them. While he does that, he also draws two pokemons cards which are then placed in the Heir halves' shared inventory.
While that is happening, The other Heir is trying to figure out what to do here. He then feels the cards in his pocket, and has an idea as he sees what they are. He plays a card of Groudon, before then placing on top of it a primal reversion card, bringing it to the height of its power. For some unknown reason, this summons Primal Groudon to the field, and because of Groudon's power to raise land levels relative to water levels, the riverbed rises, making there be less to actually build across.
While that is happening, The other Heir is trying to figure out what to do here. He then feels the cards in his pocket, and has an idea as he sees what they are. He plays a card of Groudon, before then placing on top of it a primal reversion card, bringing it to the height of its power. For some unknown reason, this summons Primal Groudon to the field, and because of Groudon's power to raise land levels relative to water levels, the riverbed rises, making there be less to actually build across.