The only exception we ended up making involved Dion, Bahamut's Dominant giving your Knights flying
Whenever you cast a noncreature spell, create X 1/1 red Phyrexian Goblin creature tokens, where X is the mana value of that spell

Giratina Renegade Pokmon Source: official-artwork Source: official-artwork Source: official-artwork Genera Renegade Pokmon Evolution Line Giratina Giratina 031/076 Storm Emeralda Giratina V 110/172 VSTAR Universe Giratina V STAR 111/172 VSTAR Universe Giratina V STAR 261/172 VSTAR Universe Giratina V 080/100 Lost Abyss Giratina V STAR 081/100 Lost Abyss Giratina V 110/100 Lost Abyss Giratina V 111/100 Lost Abyss Giratina V STAR 120/100 Lost Abyss Giratina V STAR 125/100 Lost Abyss Giratina 057/173 Tag Team GX All Stars Giratina 058/173 Tag Team GX All Stars Garchomp & Giratina-GX 099/173 Tag Team GX All Stars Garchomp & Giratina-GX 225/173 Tag Team GX All Stars Giratina 016/054 GG End Garchomp & Giratina-GX 032/054 GG End Garchomp & Giratina-GX 059/054 GG End Garchomp & Giratina-GX 060/054 GG End Garchomp & Giratina-GX 066/054 GG End Giratina 017/050 Fairy Rise Giratina 048/171 The Best of XY Giratina 048/171 The Best of XY Giratina-EX 098/171 The Best of XY Giratina 284/XY-P XY Promos Giratina-EX 091/131 Premium Champion Pack EX x M x BREAK Giratina-EX 057/081 Bandit Ring Giratina-EX 091/081 Bandit Ring Giratina 002/016 Team Plasma Battle Gift Set Giratina 035/070 Plasma Gale Giratina-EX 146/BW-P BW-P Promotional cards Giratina-EX 039/050 Dragon Blast Giratina EX 053/050 Dragon Blast Giratina 008/013 Entry Pack DPt Giratina 051/096 Galactic's Conquest Giratina 052/096 Galactic's Conquest Victory Medal 031/DPt-P DPt-P Promotional cards Inverted World Giratina 005/009 11th Movie Commemoration Set Giratina 007/014 Battle Starter Pack Giratina vs Dialga Giratina 048/092 Intense Fight in the Destroyed Sky Giratina DPBP#526 Cries of Secrecy Giratina M 014/022 2009 Movie Commemoration Random Pack

So if you've got cards that care about "attacking creatures" like Goblin Oriflamme or Trumpet Blast, they certainly do be attacking
Most cards fall within the Moderately Played to Damaged range, as truly clea
While one strategy may be to horde a bunch of counters and swing out in one big turn, the untap effect is likely more potent