Combos Utilizing Seal-of-Strength

sac the 4 seals to give morphling +12/+12, then attack for 17 flying damage doubled(34 damage), then use relentless assault and attack again and win the game

cast seal. put +1/+1 counter on ancient. instead of drawing a card (due to enchantress), return seal to your hand. repeat

sac the 4 seals to give auratog +12/+12, then it gets an additional +8/+8,then attack for 42 damage, then use relentless assault and attack and win the game

first play seal of strength and spike soldier then next turn destroy seal of strength and play monstrous growth, also remove all counters from spike making it a 13/13there are many ways this will work

sac seal targeting opponent's white creature to increase its power by 3. kill it with cinder cloud. opponent loses life equal to creature's power plus 3