Commander Masters

Savage Beating

Cast this spell only during your turn and only during combat.
Choose one —
• Creatures you control gain double strike until end of turn.
• Untap all creatures you control. After this phase, there is an additional combat phase.
Entwine {1}{R}

Cast this spell only during your turn and only during combat.
Choose one —
• Creatures you control gain double strike until end of turn.
• Untap all creatures you control. After this phase, there is an additional combat phase.
Entwine {1}{R} (Choose both if you pay the entwine cost.)

Darksteel

Play Savage Beating only during your turn and only during combat.
Choose one Creatures you control gain double strike until end of turn; or untap all creatures you control and after this phase, there is an additional combat phase.
Entwine {1}{R}