Rika, Queen of Curses

Partner with Yuta Okkotsu
Dash - Rather than pay the mana cost to
cast spells or activate abilities, if you control Yuta Okkotsu, you may instead cast Rika.
Hexproof
Rika gets +X/+X where X is the number of times it has been cast this game plus the converted mana cost of the last spells or ability casting Rika replaced.