[DSK] Implement Monstrous Emergence

[oscscull]

Part of https://github.com/magefree/mage/issues/12534

Adapted from Dragon's Fire. In testing, found a bug in that card, so fixed it here.

https://github.com/magefree/mage/pull/13756

Based the fix on Sculpted Sunburst and Final Showdown.

[oscscull]

[[Monstrous Emergence]]

[github-actions[bot]]

Monstrous Emergence - (Gatherer) (Scryfall) (EDHREC)

{1}{G} Sorcery As an additional cost to cast this spell, choose a creature you control or reveal a creature card from your hand. Monstrous Emergence deals damage equal to the power of the creature you chose or the card you revealed to target creature.