The resulting spell's color, mana cost, mana value, and so on are determined by only those alternative characteristics
Kefka, Court Mage / Kefka, Ruler of Ruin Every time Kefka, Court Mage enters or attacks, it forces discards while refilling your hand with extra cards
Vengeance enjoyed a pretty premium status as a control card all the way up to the printing of Austere Command and it continued to see play there after as well
(The turn you must wait to use a freshly-played character while they dry is also a much cuter image than Magics summoning sickness.) Being able to add a facedown card from your hand to your inkwell immediately overcomes the common MTG and Pokmon bugbear of finding yourself with no land or energy cards - any Lorcana card with the ink marker around its cost can be turned into ink - and sparks a delicious dilemma about which cards to sacrifice to the inkwell in order to play others
Scar, Vengeful Lion will help with card draw, as every time you challenge an already damaged character, you can take the top card of your deck and tuck it safely into your hand