[@Ryougu]
Okay here's the revised version. 
[img]http://www.yugiohcardmaker.net/ycmaker/createcard.php?name=Ritual+master+&cardtype=Monster&subtype=effect&attribute=Light&level=12&rarity=Common&picture=tempimages%2F158464132.jpg&circulation=&set1=&set2=&type=Spellcaster+&carddescription=Can+only+be+summoned+when+your+Life+points+are+1500+or+less.%0D%0ATo+guardian+summon+banish+at+least+3+ritual+spells+from+the+graveyard+and+tribute+monsters+who%27s+combined+levels+equals+12.%0D%0AWhile+on+the+field+all+ritual+monsters+gain+500+attack+and+cannot+be+targeted+by+opponent+card+effects.%0D%0AOnce+per+turn+using+this+card%27s+effect+activate+the+effect+of+any+ritual+spells+you%27ve+banished.&atk=1500&def=3500&creator=&year=2017&serial=05789962[/img]